Hasse
I knew of the 416 Taylor, which the 458 Winchester necked down to .416, did not know of the 375 Taylor.
I'm not a admirer of the belted magnums other then the 264 Win mag. I do shoot and load for the 375 Whelen which is the 30-06 necked to 38 caliber. Actually having a second 375 Whelen made based on the Winchester 1895 action.
Good luck on your 416 Taylor adventure.

Jim

 

Hello Jim!
Well the 375 Taylor is also known as 375/338 WinMag, 375 chaterfield taylor. It´s a 338 WinMag case that´s blown out for a 375 bullet. Not as much firepower as 375 Ruger, but it´s far from the original 375 H&H Mag. Wow, i didn´t know about 375 Whelen! I have only heard about 35 Whelen. How is the performance on that caliber? Thanks annyway Jim!

 

What length action are you using

Dear Hass-91,

It all may come down to how long your magazine box is. The two obvious ones are the 375 H&H or the new 375 Ruger. The 416 Taylor has a dinky shoulder, when you head space on it, instead of the belt. The 375 Taylor or the 375 Ruger, or 38 Newton for that matter, will have plenty of area for head spacing on the shoulders, instead of the belts. The larger diameter of the 375 Ruger case will help with efficiency. A 38 Newton will be dead on. I had to trim my 375 Ruger wildcat, back, shorter than 2.5 inches, if I wanted a 285 Speer Grand Slam to work through an military Mauser M-98 magazine, made for the 7.92 x 57.

I've heard tell of a British 375 made on a belted 30-06 diameter case. That might give you an extra round in your magazine. There is a 375 x 338 Win Mag, that is right in the slot too. I would work backwards from your preferred bullet, and the length of your magazine box. They are all about the same, in the field, and now the rimless Ruger case makes a fine parent for the Newton, which is still the prettiest of the lot, if you have a 30-06 magazine length, instead of one made for the shorter 7.92 x 57 mauser.

I respect your wanting firepower for tangling with Russian Brown Bears, but the .416 x 40 Newton case that an acquaintance mailed to me looks hard to beat. It's made from the 375 Ruger, reformed parent.

Perchance you might consider a 375 x 350 Rem. Mag. in a lighter carbine styled rifle. That would solve the long pointy bullet problem, and still have plenty of "Whump", at close range. I'm taking for granted, that you will put open sights on for close range encounters, with bad tempered Moose and Brown Bears. And that you will have a low enough stock comb, to use them. I have a large, fat, head, and that stopped me from buying a Ruger 375 Ruger Hawkeye. Those rifles have open sights, but with stocks as straight as 2 x 4 boards.

 

Dear Hass-91,

It all may come down to how long your magazine box is. The two obvious ones are the 375 H&H or the new 375 Ruger. The 416 Taylor has a dinky shoulder, when you head space on it, instead of the belt. The 375 Taylor or the 375 Ruger, or 38 Newton for that matter, will have plenty of area for head spacing on the shoulders, instead of the belts. The larger diameter of the 375 Ruger case will help with efficiency. A 38 Newton will be dead on. I had to trim my 375 Ruger wildcat, back, shorter than 2.5 inches, if I wanted a 285 Speer Grand Slam to work through an military Mauser M-98 magazine, made for the 7.92 x 57.

I've heard tell of a British 375 made on a belted 30-06 diameter case. That might give you an extra round in your magazine. There is a 375 x 338 Win Mag, that is right in the slot too. I would work backwards from your preferred bullet, and the length of your magazine box. They are all about the same, in the field, and now the rimless Ruger case makes a fine parent for the Newton, which is still the prettiest of the lot, if you have a 30-06 magazine length, instead of one made for the shorter 7.92 x 57 mauser.

I respect your wanting firepower for tangling with Russian Brown Bears, but the .416 x 40 Newton case that an acquaintance mailed to me looks hard to beat. It's made from the 375 Ruger, reformed parent.

Perchance you might consider a 375 x 350 Rem. Mag. in a lighter carbine styled rifle. That would solve the long pointy bullet problem, and still have plenty of "Whump", at close range. I'm taking for granted, that you will put open sights on for close range encounters, with bad tempered Moose and Brown Bears. And that you will have a low enough stock comb, to use them. I have a large, fat, head, and that stopped me from buying a Ruger 375 Ruger Hawkeye. Those rifles have open sights, but with stocks as straight as 2 x 4 boards.

Hi Carpooler!
The magazine box is almost like a standard M98. The rifle is a Husqvarna 1651. I could fit 86,5mm/3,4" cases in there. It´s the 375/338 WinMag aka 375 Taylor I´m intresred about. 3+1 will fit in the magazine.

 

In one of my manual they call the 375 Taylor the 375/338 Chatfield-Taylor and another one off the 338mag called 375 Durham Magnum has little more case capacity than 375 Taylor. On the 375 Durham they shorten neck length
blew body forward gave little more capacity.

Always fun wildcats

 

Hi old roper!
Hmm, never actuly heard of the 375 Durmham Magnum. It really sounds interesting. It´s some kind of Ackley Improved, right? Yes, you are right about it´s namned 375/338 Chattfield-Taylor. I totaly forgot that. I wounder about wich one of them that´s most easy to get load data to? And wich of them is the most known?

 

I strongly considered the 375 Taylor for my lighter African rifle. I thought it a fine cartridge. In 375 I load the Hornady spire point 270 grain, it is very accurate and deadly.

I have never liked the all copper bullets as they foul the barrel and either cut into the powder charge or increase the cartridge overall length. I have loaded them in the 416 Weatherby mag, but thy just showed no accuracy.

 

Hi HarryS!
It sounds awsome! I like the copper bullets, rapid expansion, accurate and has not much problem with bones.

 

I would think that being from Sweden it would be very simple to neck the 358 Norma Magnum to 375 caliber. You might even find a gunsmith who has already done this in Sweden. You could then use 358 Norma data as a guideline.
Volume 2 Handbook For Shooters & Reloaders has information about the 375/338 Chatfield Taylor. This book is out of print but still available on various auction sites, maybe even on e-bay.
About 35 years ago I had a friend who used the 375/338 C.T. every year moose hunting in Alaska's bear country. His chronographed velocities were only about 50-75 fps below the 375 H&H. He used Noslers old style partitions if I remember correctly and said this rifle and cartridge killed extremely well.

 

Hi swampshooter!
It´s actuly a 358NM rifle that I`m gonna build on. The Husqvarna 1651 is only made in 358NM if I´m not totaly wrong. 338WinMag and 358NM is quite similar to each other. I will fireform the magnum cartridges I will get my hands on.

That handbook i need to get my hands on! Would be great if SAAMI would accept the 375/338C-T or the 375DH and maby start to build some firearms in the caliber. But now when the 375 Ruger exist it´s no use to it. Yea, i have been reading about someone in Alaska who is using the 375/338C-T on moose and bear, and he said that it´s the best caliber he ever been used.

I like the magnum belt on the cartidges, dono why actuly.

 

Too many cooks spoil ---

Hasse-91.

There are probably five or six iterations of the 375 Taylor, Chatfield Taylor, et al.. Problem is they all head space on the belt. The Whelen is over bore on what the factories will accept for shoulder to head space on. The 38 Newton, the 375 Ruger, and the wildcats, made on the WSM's all have to head space on a shoulder.

The belt worked best on the H&H model, with gently sloping shoulders. It leads to double head spacing on sharp shoulders in bottle neck cartridges. Remember that anything made from the 375 Ruger as a parent is like boring an automobile engine, to +.030". The new case heads are the same as the belt's diameter, but no more double head spacing, and no more multiple chambers and reloading dies to trip over.

I've put the 375 on the back burner, because I didn't want my wildcat to drop into a factory 375 Ruger chamber. I went with a .416, which also can drop into the newer 416 Ruger, but I use either basic brass or 375 head stamped brass. That way my bullet keeps it out of any 375 Ruger chamber.

In your neck of the woods, a 38 Newton, made from Ruger brass, or the new wildcat from Cody, Wyo., the .416 Newton, which has exactly the same volume as my slightly longer, and more streamlined 10.6 x 375 Ruger, will also do what you want. You just load it with a 350 gr. Speer Mag Tip, at 2400 fps. These don't kick you in your teeth, and shoot flat. They are close to the older 400 Jeffery, not the bigger 404 Jeffery. My military Mauser M-98 is still under 9 lbs, with a scope. But it does have the mag box opened up to accept a 3.5 inch long round. There's still plenty of steel in the bottom, behind the bottom bolt lug. And of course the more modern looking 416 is shorter, albeit, while I can resize a 375 Ruger case, and barely have to kiss the mouth in a trimmer, the man from Cody has to really go at it to get each one of his, trimmed back to 2.5 inches.

After all is said and done, I am a little surprised that you don't just go with the new C.I.P. 375 Holderlin. It must be very close to what you are looking for, and just like the Taylors. And it has been legitimized, by C.I.P., so there's only one, spec drawing. But unless you've been having trouble with 35 cal. bullets, that 358 Norma Magnum is murder on both ends, in a light rifle. So is the factory ammo for the 375 Ruger. If you are looking for the big push, instead of being slapped silly, remember this comes at the cost of the Norma's flat trajectory. Those 285 gr. Grand Slams I want to use in my future 375, have really long noses, ahead of their cannelures. That detail, brings one right back to your 375 Taylor, or the 375 x 338 Win. Mag./38 Newton. They look to be a little on the heavy side for a 375 WSM, as the shank will protrude down into the belly of the short necked cases. As a parting shot, the developers of the Holderlin said they kept the 8 x 68 Schuler's profile for reasons of controlling recoil. They knew they could get more volume, but the trade off was too much punch on the back end.

I feel the same way. My 375 x 8mmx66mm would have the volume of the 300 Win Mag, necked up 375 caliber, but mine is only 2.4 inches long, in the original 3.3 inch long magazine box, made for the 7.92 x 57mm military rounds. If I open this one up too. I can have 2.5 inches, or a little more.

But this would only be for me to use the particular bullet that I want, not worry about a few more feet per second.

 

Hasse-91.

There are probably five or six iterations of the 375 Taylor, Chatfield Taylor, et al.. Problem is they all head space on the belt. The Whelen is over bore on what the factories will accept for shoulder to head space on. The 38 Newton, the 375 Ruger, and the wildcats, made on the WSM's all have to head space on a shoulder.

The belt worked best on the H&H model, with gently sloping shoulders. It leads to double head spacing on sharp shoulders in bottle neck cartridges. Remember that anything made from the 375 Ruger as a parent is like boring an automobile engine, to +.030". The new case heads are the same as the belt's diameter, but no more double head spacing, and no more multiple chambers and reloading dies to trip over.

I've put the 375 on the back burner, because I didn't want my wildcat to drop into a factory 375 Ruger chamber. I went with a .416, which also can drop into the newer 416 Ruger, but I use either basic brass or 375 head stamped brass. That way my bullet keeps it out of any 375 Ruger chamber.

In your neck of the woods, a 38 Newton, made from Ruger brass, or the new wildcat from Cody, Wyo., the .416 Newton, which has exactly the same volume as my slightly longer, and more streamlined 10.6 x 375 Ruger, will also do what you want. You just load it with a 350 gr. Speer Mag Tip, at 2400 fps. These don't kick you in your teeth, and shoot flat. They are close to the older 400 Jeffery, not the bigger 404 Jeffery. My military Mauser M-98 is still under 9 lbs, with a scope. But it does have the mag box opened up to accept a 3.5 inch long round. There's still plenty of steel in the bottom, behind the bottom bolt lug. And of course the more modern looking 416 is shorter, albeit, while I can resize a 375 Ruger case, and barely have to kiss the mouth in a trimmer, the man from Cody has to really go at it to get each one of his, trimmed back to 2.5 inches.

After all is said and done, I am a little surprised that you don't just go with the new C.I.P. 375 Holderlin. It must be very close to what you are looking for, and just like the Taylors. And it has been legitimized, by C.I.P., so there's only one, spec drawing. But unless you've been having trouble with 35 cal. bullets, that 358 Norma Magnum is murder on both ends, in a light rifle. So is the factory ammo for the 375 Ruger. If you are looking for the big push, instead of being slapped silly, remember this comes at the cost of the Norma's flat trajectory. Those 285 gr. Grand Slams I want to use in my future 375, have really long noses, ahead of their cannelures. That detail, brings one right back to your 375 Taylor, or the 375 x 338 Win. Mag./38 Newton. They look to be a little on the heavy side for a 375 WSM, as the shank will protrude down into the belly of the short necked cases. As a parting shot, the developers of the Holderlin said they kept the 8 x 68 Schuler's profile for reasons of controlling recoil. They knew they could get more volume, but the trade off was too much punch on the back end.

I feel the same way. My 375 x 8mmx66mm would have the volume of the 300 Win Mag, necked up 375 caliber, but mine is only 2.4 inches long, in the original 3.3 inch long magazine box, made for the 7.92 x 57mm military rounds. If I open this one up too. I can have 2.5 inches, or a little more.

But this would only be for me to use the particular bullet that I want, not worry about a few more feet per second.

I have actuly been thinking about 375 Ruger, but I´m still "in love" with the magnum belt. There is tools for both of them, shells for ruger but it´s not hard to create shells to 375/338C-T. It maby doesn´t really matter wich one i choose, I just know that ruger has slightly larger case capacity than 375 H&H. And it doesn´t seem to be hard to get the C-T in similar speeds as 375 H&H

 

If penetration is what you want; thing about keeping the 358 Norma mag. At 250 grains I believe it has better sectional density than the 300 gr 375 bullets. Sectional density with a stout bullet means more penetration in my book.

 

I doesn't like the 358NM, the recoil is so rappid and sharp. That's why i climb up to larger calibers. I like the recoil long and heavy. My 9,3*62 is just like that. Penetration also depends on wich bullet i use.

 

Only for the ambitious...

If you must have a belt, Hornady offers belted Basic brass under p/n 8798 for about $52 a box of 50. My wildcat uses the 375 Ruger Basic, a case having a .532" head (13.51 mm) and no belt. They come about 68 mm in length. You design the wildcat around those parameters and go from there. Once you're all done, you'll have something unique in all the world and will feel something truly special the first time you drop some game with it.

I'm presently working on a .358-caliber version of my successful .30-caliber round. Gunsmith has much of it, but we're still waiting on Lilja to produce the barrel. My round could be made into a .375, but there are plenty of those already. No need for that...

 

If you must have a belt, Hornady offers belted Basic brass under p/n 8798 for about $52 a box of 50. My wildcat uses the 375 Ruger Basic, a case having a .532" head (13.51 mm) and no belt. They come about 68 mm in length. You design the wildcat around those parameters and go from there. Once you're all done, you'll have something unique in all the world and will feel something truly special the first time you drop some game with it.

I'm presently working on a .358-caliber version of my successful .30-caliber round. Gunsmith has much of it, but we're still waiting on Lilja to produce the barrel. My round could be made into a .375, but there are plenty of those already. No need for that...

I actuly have no experiens of wildcats at all.... I tough the 375/338C-T was quite common in US, Canada and Alaska? I doesn´t know at all where to go to get reamer, tools or loading data if i made a wildcat from scratch. That´s why i would like to get something that´s possible to get the tools and reamer and then i have my rifle. And some clue on what load weight i will start and stop at.

 

What about the .375x300 Magnum? It's a 300 WinMag case necked out to .375 and keeps the parent case its original length. It's been around a while, and Mike Belm says they shoot like varmint guns. I'm sure reamers and dies should be available. Check to see what RCBS has in regard to this cartridge...

http://ammoguide.com/?catid=526

 

What about the .375x300 Magnum? It's a 300 WinMag case necked out to .375 and keeps the parent case its original length. It's been around a while, and Mike Belm says they shoot like varmint guns. I'm sure reamers and dies should be available. Check to see what RCBS has in regard to this cartridge...

AmmoGuide is now... "Interactive"!

Okey! Yea, I will try to check that out!

 

info on 9.3mm

Hasse-91,

Can you provide a bit of info on the field effects with your 9.3mm rifle?
I think I can see where you are coming from now. There are some really serious 375 boomers, and your std. mag., which ever case you use, will barely make the cut. You will be using bullets which will work through the 378 Wea. and 375 RUM. You may get bullets penciling right through. The 9.3's don't have the jumbo boomers, so how do those heavy bullets expand in thin skinned game in your neck of the woods?

I respect you wanting to stay with the .375 Taylor, but the 416 Taylor or any of the wildcats made from the H&H or Ruger parent cases, will handle the Speer 350 Mag Tip, loaded down to 2400 fps., and this bullet was made for Arctic Game. 2400 is about the maximum penetration velocity. 2550 will slap you around a lot more.

 

Hasse-91,

Can you provide a bit of info on the field effects with your 9.3mm rifle?
I think I can see where you are coming from now. There are some really serious 375 boomers, and your std. mag., which ever case you use, will barely make the cut. You will be using bullets which will work through the 378 Wea. and 375 RUM. You may get bullets penciling right through. The 9.3's don't have the jumbo boomers, so how do those heavy bullets expand in thin skinned game in your neck of the woods?

I respect you wanting to stay with the .375 Taylor, but the 416 Taylor or any of the wildcats made from the H&H or Ruger parent cases, will handle the Speer 350 Mag Tip, loaded down to 2400 fps., and this bullet was made for Arctic Game. 2400 is about the maximum penetration velocity. 2550 will slap you around a lot more.

The 9,3x62 has a smoth recoil, good death no matter what bullet you choose. Personal i have been using the Sako Hammerhead 286gr and i had in mind to use the Barnes TTSX 250gr or TSX 286gr this moose and bear hunt but i didn´t have monney. The bullets expand with no problems in even deers or foxes. Accubond and Barnes works just fine. I wouldn´personal use soft points on small games, you have to run with a plastic bag and catch meetballs falling from the sky. It´s quite close to the 35 Whelen. I think the 9,3 is a good caliber, no matter of what. But i tough the 375C-T maby has even smother recoil, and i personal like big and heavy bullets flying threw the air. I have problems with calibers from 7mm up to beneth 9,3mm. I really can´t handle the rappid recoil without a silencer.

I have been looking at the 375 Ruger and i can´t find annything wrong with it. It´s just that i like the magnum belt. But it will maby be even sheaper and easier to take the Ruger. I´m gonna get a 458WinMag as well. That´s why i want something in the middle (375) that will work alittle better at range.

 

You won't notice much difference in 358 Norma and 375 Taylor, except 375 will kick harder if you load a heavier bullet. You're not going to get a softer recoil unless you load to less velocity, which is entirely possible. I've used the 285 gr. Speer, it's a very good bullet and will hold up well even at close range. If you wanted to load a 270gr. or 285gr. to 2400 fps. recoil velocity would be decreased and you would still have very good killing power. Of course then you wouldn't gain much over your 9.3x62. I hope that if you get a 375 Taylor that you keep your 9.3. You just might decide to go back to it.

The belt is not a problem if you set up your dies to headspace off of the shoulder.

 

I got some space so the 9,3 could stay. I don´t know avbout the recoil, tough it would be less rappid?

 

Just for fun...

Just to toot my own little horn a little bit, here's my wildcat, Hasse. The 300 Nevada Desert Magnum (300NDM) has the same case length, the same neck length and the same shoulder angle as the venerable .30-06 Springfield. Long neck keeps flame and heat inside the case, minimizing throat erosion. Gentle shoulder angle makes it feed well. No belt to bugger-up the feeding. Cost was around $3000 for various dies, reamer, machining, new barrel, travel to gunsmith, trimmers, et cetera. Not especially cheap, but quite intrinsically rewarding. Now working on necking it out to .358-caliber...

Case volume of 300NDM is 23% more than .30-06 and 10% less than 300WinMag. Kind o' the perfect "middle magnum," if you will. Chronographed 3000 fps using 68 grains of H4831SC under the 180-grain Sierra MatchKing. Has shown best promises of being good on pressure when using 70 grains of H1000 and 150-grain Hornady FMJs. No chrono values for that load, however. Hart barrel puts 'em in the same hole with pleasing regularity...

Visual comparison above is from ammoguide.com, a great site with tonnes of info for so little per year. It's basically a "reloading manual that never needs a new edition to be printed" because the members always keep it updated with new loads, et cetera. Y'otta sign up. Cheap, too, at less than five cents per day (I think) for all that's there. Might be less, but still a whoppin' bargain any way you slice it...

 

Just to toot my own little horn a little bit, here's my wildcat, Hasse. The 300 Nevada Desert Magnum (300NDM) has the same case length, the same neck length and the same shoulder angle as the venerable .30-06 Springfield. Long neck keeps flame and heat inside the case, minimizing throat erosion. Gentle shoulder angle makes it feed well. No belt to bugger-up the feeding. Cost was around $3000 for various dies, reamer, machining, new barrel, travel to gunsmith, trimmers, et cetera. Not especially cheap, but quite intrinsically rewarding. Now working on necking it out to .358-caliber...

Case volume of 300NDM is 23% more than .30-06 and 10% less than 300WinMag. Kind o' the perfect "middle magnum," if you will. Chronographed 3000 fps using 68 grains of H4831SC under the 180-grain Sierra MatchKing. Has shown best promises of being good on pressure when using 70 grains of H1000 and 150-grain Hornady FMJs. No chrono values for that load, however. Hart barrel puts 'em in the same hole with pleasing regularity...

What was the parent case? From the diagram you attached, it looks like it would have more than enough shoulder if blown out to 375 and give Hasse what he wants. Just a thought...

 

Wow, that´s a really interesting cartridge! To bad that I´m not inetrested in .308 calibers annymoore... 3000 US for everything? That´s really expensive!

 

$3000 US for everything? That´s really expensive!

Well, we were going boldly where no man had gone before. And I am single with no dependents and no debts. Makes life easy and fun...

This is a de novo round, meaning "of the new." Nothing else like it on the planet. It's just a .30-06 Springsteen on a magnum case. Simple. Makes me wonder why no one ever tried it before. Just as Colonel Townsend Whelen developed the 35 Whelen by just necking-out the Springsteen, this round is simple in design, too. But people seem to want to have their dental fillings shaken out by a "big" magnum-- the 300 WinMag or 300RUM, for example. Not me. I also want to delay paying for a new barrel. Shooting a hot magnum costs about a buck a shot in replacement costs for the barrel. That short neck costs a lot of money, in case you didn't know it. Maybe I should say "that big powder charge to get that light-speed muzzle velocity" costs a lot of money. In contrast, my round keeps all that heat and flame in the neck, and saves the throat.

Parent case is the 375 Ruger Basic, Hornady p/n 8674. Case is .510 inches (12.95mm) in diameter at shoulder; .530 inches (13.46mm) at the head. 1:167 taper rate (very cylindrical) keeps the bolt thrust down. By contrast, the .30-06 (a combat round) has a taper rate of 1:110 for easier breaching and extraction. Volume/capacity to the bottom of the neck of the 300NDM is 76.8 grains of water; about 86 or so to the mouth. I don't measure to the mouth because the bullet precludes having powder there. Why bother with such a figure if it can't be used for powder? I have empirically measured the 300 WinMag to have 87.2 grains of water capacity to the bottom of the neck, and the 300RUM to hold 105.5 grains to the same location.

The cost was in having Hornady make up forming dies and reloading dies; in having Dave Manson machine a reamer and headspace gauges; in having Lee Precision make up a Factory Crimp Die; in having Lee Precision machine up trimming mandrels of specific and graduated diameters; in 300 raw cases at about a buck each; a new Hart barrel in stainless at 510 bucks; new Shrewd Number Four muzzle brake at 75 bucks (mailed); travel to gunsmith (600 miles or 966 kilometers); petrol at about $4.00 a gallon (Summer 2012) and the reaming my gunsmith gave my wallet. Took me from July 25, 2008 (first day of design work) until July 15, 2012 to fire the first round at approx 1500 PDT, about 15 miles (24 kilometers) south of Winnemucca, NV. But it was worth it. What a feeling! Now, when I fire the rifle, I "feel" everything that went into it. It's MY creation. Nobody else has one. And now, a .358-caliber version is on the way. We'll just follow Colonel Whelen's advice and neck out the 300 to fit the larger bullet...

 

Hasse-91's new idea

Hi Hasse,

Maybe you have a new product idea here. "Soft Point GAME BAGGIES"!

 

Hi Hasse,

Maybe you have a new product idea here. "Soft Point GAME BAGGIES"!

Hehe, that would be something huh?

 

Hasse's reamer...

WOW!! Too big at 1000 pixels wide. Will size it down right away and re-post...

Well, sized it down to 800 pixels wide, and it looks like krapp! The lines are all mottled, broken up and show traces of red, green and blue color in them. Looks really bad. Will just send 1000 pix example to Hasse via PM. He might enjoy getting an eyeball on it...

 

I give you the 375Hasse Magnum...

These dimensions are spot-on. No errors. No idea what the water capacity would be. You could calculate everything up to the bottom of the neck using the outside dimensions, then subtract ten percent for the volume lost to the webbing. Good-looking cartridge, Hasse. Has some possibilities. You'd never be in any danger of your rifle not being allowed into these crazy countries that bar military cartridges because this round is unique in all the world. Just no headstamp, which I understand gives some of these countries intellectual diarrhea. Now, using just this drawing, this round could be manufactured and you'd have the only Hasse375 Magnum on the planet. You'd send it to Hornady and to Dave Manson, and they could go with it from there. Tempting, isn't it?

Thank you for allowing me to have been of service to you, Hasse. It's why we're here...

Cartridge Creator was used to draw the above and is from ammoguide.com, a great site with tonnes of info for so little per year. It's basically a "reloading manual that never needs a new edition to be printed" because the members always keep it updated with new loads, et cetera. Y'otta sign up. Cheap, too, at less than five cents per day (I think) for all that's there. Might be less, but still a whoppin' bargain any way you slice it...

 

These dimensions are spot-on. No errors. No idea what the water capacity would be. You could calculate everything up to the bottom of the neck using the outside dimensions, then subtract ten percent for the volume lost to the webbing. Good-looking cartridge, Hasse. Has some possibilities. You'd never be in any danger of your rifle not being allowed into these crazy countries that bar military cartridges because this round is unique in all the world. Just no headstamp, which I understand gives some of these countries intellectual diarrhea. Now, using just this drawing, this round could be manufactured and you'd have the only Hasse375 Magnum on the planet. You'd send it to Hornady and to Dave Manson, and they could go with it from there. Tempting, isn't it?

Thank you for allowing me to have been of service to you, Hasse. It's why we're here...

Cartridge Creator was used to draw the above and is from ammoguide.com, a great site with tonnes of info for so little per year. It's basically a "reloading manual that never needs a new edition to be printed" because the members always keep it updated with new loads, et cetera. Y'otta sign up. Cheap, too, at less than five cents per day (I think) for all that's there. Might be less, but still a whoppin' bargain any way you slice it...

That´s something in my taste! Either ~0,395" or ~0,328" neck. But the overall legnth still 2,55". Yes, it´s really tempting! I will try to calculate out the capacity. Just wish i had monney to create it. It feels so good that there is people out there that is so friendly and helpfull! Manny thanks to you nvshooter!

 

Case volume of 375Hasse Magnum...

Using the dimensions shown in the drawing, I calculate the case volume to be 7.023 cubic centimeters as a maximum, and 6.321 cubes if we subtract ten per-cent for the internal webbing. Water capacity would be approximately 97 to 98 grains, which is very near to 11.8 per-cent greater than the 300 WinMag and only about 7.6 per-cent less than the 300RUM. This is one himmel of a cartridge, Hasse. You could slam into the next world just about anything short of rhino and elephant with this thing. A bull moose would see you point this bad boy at it-- and just voluntarily expire.

Because your government isn't defecating all over itself because some nut committed a horrible crime and because you will still own your guns in a year, I'd begin working on this round. Do it a bit at a time. A few bucks here, a few there. Spread out the cost. Got a long-action magnum rifle? You're a long way down the road, right there. You'll need forming dies, reloading dies, the reamer, headspace gauges, raw brass and a way to trim the cases. Lee Precision can help you there, or you can have the trimming mandrels made in-country. The thread for the Lee 90401 over-sized cutter is 10-24. You'll need a new barrel, but .375-caliber blanks are easy to get, I suppose. You could even order a short-chambered 375 Ruger Compact Magnum barrel and use that because your round completely cuts out that chamber.

If you did this round, you'd have a sledgehammer in your hands and the animals would run in fear. I suppose that would make hunting more fun and more of a challenge...

 

375Hasse Sledgehammer with 0.362 neck length....

I changed the name of it to "Sledgehammer" just before posting it because "hammer" rhymes with "Hasse." I like the look of this cartridge with the .362-inch neck. Looks good. Looks "balanced." Part of the fun in designing these rounds is in naming them, but you can call it anything you want until you order the dies, et cetera. Once the order is in and the CNC machines are programmed, the die is cast. The name has to sing-- has to trip off the tongue with ease and pleasure. Also has to say you're packin' big medicine for what's gonna be on the grill, tonight...

Cartridge Creator from ammoguide.com, a truly wonderful site for gunsmiths, shooters and reloaders.

 

I changed the name of it to "Sledgehammer" just before posting it because "hammer" rhymes with "Hasse." I like the look of this cartridge with the .362-inch neck. Looks good. Looks "balanced." Part of the fun in designing these rounds is in naming them, but you can call it anything you want until you order the dies, et cetera. Once the order is in and the CNC machines are programmed, the die is cast. The name has to sing-- has to trip off the tongue with ease and pleasure. Also has to say you're packin' big medicine for what's gonna be on the grill, tonight...

Cartridge Creator from ammoguide.com, a truly wonderful site for gunsmiths, shooters and reloaders.

That´s just beautifull! I will have to think about this and try to get the monney to do something like this. You have been opening my eyes about that it doesn´t need to have a magnum belt to look cool.

 

Bargain Basement die set

Hasse=91,

It's always the die's which derail these dreams. However, you could try what I did. There are two common oversized 375 bore Die sets. One is for the 375 Rem. Rum. and the other is for the 378 Weatherby. I did this same trick to get my first 10.6 x 375 Ruger wildcat rounds, using an oversized, but cheap, $35 w shppg., set of Lyman dies for the 416 Rigby.

The downside is you have to have the same, or a couple of thousandth's longer necks, than the round that the dies were made for. I kept the same half inch long neck as the parent 416 Rigby. I have to carefully lock the sizing die down for my press, so I don't wipe out my 16 deg. shoulders, and end up with those 45 deg. shoulders of the 416 Rigby, and lose head spacing, in the process.

You do this by matching your wildcat round with the parent cartridge for the F.L. Die set. Then pay a machinist or G.S. to chuck it into a lathe, and cut back the sizer die with C-6 Carbolloy tooling. C-2 won't work. On my example, we trimmed the sizing die back .300 inch. The seater worked fine, right out of the Orange Lyman box.

In your case have your G.S. put on an oversized pilot on a finish reamer for a 338 win Mag. or a 358 Norma. He cuts the case body with this and then he uses one of his own neck throat reamers to adjust for your own necks. As you are hung up on belts, he just cuts one to his head space GO gauge. Buy or make a tapered expander button, and you can neck size, expand, seat and crimp with this, trimmed, oversized die set. You must be careful so you don't push your shoulders back and buckle them. But you will be head spacing off of your beloved belts, anyways. I could have expanded a 338 Win Mag. or a 358 Norma Mag. to .375, and fired a few in my chamber, to get my own 375 Taylors.

Really, I used the 300 H&H F.L. die, and then trimmed my cases back. (SLOW). I had available 375 H&H virgin brass, to use. In my oversized Ruger case based wildcats, these bulge out ahead of their belts, to the same diameters as the belts. It looks like a second extraction groove. If you trim back a 358 Norma case a bit, it should be undersized enough to fit into your Taylor Chamber (375x338Win Mag.). But the belts will head space, and the case heads are both the same. There won't be any bulging by firing, only by putting too much effort into bullet seating, crimping.

Then I would send a handful to my custom die grinder, and he would work off of them. No muss, no fuss, and they will be guaranteed to fit correctly to your chamber. But you could delay for a year or two, using those expanded neck sized cartridge cases. I would do at least fifty of these, because there will be some losses, due to buckling the shoulders as you go along.

Doing it this way, you will lose some neck length, expanding up. You will have to calculate this loss, before you trim back your larger diameter die. So you would keep the neck length of the respective 378 Wea. or the 375 RUM. You can go a little longer, but not shorter, if you want the crimp function in the seating die to still work.

If I get really perverse, I can trim back some real 416 Rigbys, .300's of an inch, and make up some Std. length cases. I could then expand these necks up to .500 caliber, for the next wildcat project I have on my drawing board. For this I would use Cream of Wheat, fire forming loads. These seem to keep the original neck lengths better, than expanding with a button or two.

But it may work better to have that same G.S. put a belt recess into my sizing die. Of course there isn't any Lyman seater for a .500 x 416 Rigby, but I already have the innards to convert any Hornady sleeved seater to .500". What I still need is the correct .500, minus .002 of an inch expander button and something to neck size this beast. Hornady does this trick with an integral expanding column in a solid die body, for their .500 cal. pistol dies.

This has gone off topic, but now you know how I approached the problems which you will have to deal with. Yes, you can get by on the cheap side for a year or so! Then a custom die set from Hornady will run $150 + shipping, and customs in your country. If you could score a Lowthar Walther deep chambered barrel in another 375 std. length cartridge, it might cut your expenses in half, or more. Then you merely file off the barrel stub to get your belt to head space, against your own bolt's face.

Then it comes down to a home made barrel vise, and some flat files. If your rifle is a Mauser clone, you may just use a large crescent wrench or make up a U bolt threaded through a flat piece of steel to grasp the receiver ring. Getting the sights on straight will be the bigger pain. But there are new low temp. solders, which will stand up to some hot bluing tanks. Brownells is a good source for many of these short cuts.

Good luck with your belted 375 standard length magnum. And thanks for the recommendations for the 9.3 x 63 standard rimless cartridge's performance. Just remember, if it packs about the same amount of powder behind the same bullets as the 375 H&H, it will kick just as hard as the 375 H&H, in a rifle somewhat lighter than most ten pound 375 H&H's. I've heard of some distraught customers with these, who thought differently, before reality slapped them up along side their heads.

This is why I sniffed out the Speer bullet, dedicated for Arctic, sub Arctic, and the larger, non DG, African Plain's game. It just happened to be a .416, 350 gr. Mag Tip.

 

Hasse=91,

It's always the die's which derail these dreams. However, you could try what I did. There are two common oversized 375 bore Die sets. One is for the 375 Rem. Rum. and the other is for the 378 Weatherby. I did this same trick to get my first 10.6 x 375 Ruger wildcat rounds, using an oversized, but cheap, $35 w shppg., set of Lyman dies for the 416 Rigby.

The downside is you have to have the same, or a couple of thousandth's longer necks, than the round that the dies were made for. I kept the same half inch long neck as the parent 416 Rigby. I have to carefully lock the sizing die down for my press, so I don't wipe out my 16 deg. shoulders, and end up with those 45 deg. shoulders of the 416 Rigby, and lose head spacing, in the process.

You do this by matching your wildcat round with the parent cartridge for the F.L. Die set. Then pay a machinist or G.S. to chuck it into a lathe, and cut back the sizer die with C-6 Carbolloy tooling. C-2 won't work. On my example, we trimmed the sizing die back .300 inch. The seater worked fine, right out of the Orange Lyman box.

In your case have your G.S. put on an oversized pilot on a finish reamer for a 338 win Mag. or a 358 Norma. He cuts the case body with this and then he uses one of his own neck throat reamers to adjust for your own necks. As you are hung up on belts, he just cuts one to his head space GO gauge. Buy or make a tapered expander button, and you can neck size, expand, seat and crimp with this, trimmed, oversized die set. You must be careful so you don't push your shoulders back and buckle them. But you will be head spacing off of your beloved belts, anyways. I could have expanded a 338 Win Mag. or a 358 Norma Mag. to .375, and fired a few in my chamber, to get my own 375 Taylors.

Really, I used the 300 H&H F.L. die, and then trimmed my cases back. (SLOW). I had available 375 H&H virgin brass, to use. In my oversized Ruger case based wildcats, these bulge out ahead of their belts, to the same diameters as the belts. It looks like a second extraction groove. If you trim back a 358 Norma case a bit, it should be undersized enough to fit into your Taylor Chamber (375x338Win Mag.). But the belts will head space, and the case heads are both the same. There won't be any bulging by firing, only by putting too much effort into bullet seating, crimping.

Then I would send a handful to my custom die grinder, and he would work off of them. No muss, no fuss, and they will be guaranteed to fit correctly to your chamber. But you could delay for a year or two, using those expanded neck sized cartridge cases. I would do at least fifty of these, because there will be some losses, due to buckling the shoulders as you go along.

Doing it this way, you will lose some neck length, expanding up. You will have to calculate this loss, before you trim back your larger diameter die. So you would keep the neck length of the respective 378 Wea. or the 375 RUM. You can go a little longer, but not shorter, if you want the crimp function in the seating die to still work.

If I get really perverse, I can trim back some real 416 Rigbys, .300's of an inch, and make up some Std. length cases. I could then expand these necks up to .500 caliber, for the next wildcat project I have on my drawing board. For this I would use Cream of Wheat, fire forming loads. These seem to keep the original neck lengths better, than expanding with a button or two.

But it may work better to have that same G.S. put a belt recess into my sizing die. Of course there isn't any Lyman seater for a .500 x 416 Rigby, but I already have the innards to convert any Hornady sleeved seater to .500". What I still need is the correct .500, minus .002 of an inch expander button and something to neck size this beast. Hornady does this trick with an integral expanding column in a solid die body, for their .500 cal. pistol dies.

This has gone off topic, but now you know how I approached the problems which you will have to deal with. Yes, you can get by on the cheap side for a year or so! Then a custom die set from Hornady will run $150 + shipping, and customs in your country. If you could score a Lowthar Walther deep chambered barrel in another 375 std. length cartridge, it might cut your expenses in half, or more. Then you merely file off the barrel stub to get your belt to head space, against your own bolt's face.

Then it comes down to a home made barrel vise, and some flat files. If your rifle is a Mauser clone, you may just use a large crescent wrench or make up a U bolt threaded through a flat piece of steel to grasp the receiver ring. Getting the sights on straight will be the bigger pain. But there are new low temp. solders, which will stand up to some hot bluing tanks. Brownells is a good source for many of these short cuts.

Good luck with your belted 375 standard length magnum. And thanks for the recommendations for the 9.3 x 63 standard rimless cartridge's performance. Just remember, if it packs about the same amount of powder behind the same bullets as the 375 H&H, it will kick just as hard as the 375 H&H, in a rifle somewhat lighter than most ten pound 375 H&H's. I've heard of some distraught customers with these, who thought differently, before reality slapped them up along side their heads.

This is why I sniffed out the Speer bullet, dedicated for Arctic, sub Arctic, and the larger, non DG, African Plain's game. It just happened to be a .416, 350 gr. Mag Tip.

That´s cool! Do you think that it would be anny material left to make a "458 Ruger"? Take a 375 Ruger case and blow it out so a 0,458" bullet would fit? Or doesnt it gonna have anny angle down to the bullet?

Thank you! And think about the 9,3x62. You could almost see it like a 45-70 or something else. Shoroe, the bullet travel faster than a 45-70 and the bullets aren´t that heavy. But there is not much in the world that would live after a good shot with a 9,3x62- As I said, the only reason for me is that i want to have heavier bullets to shoot. That is the only reason.

 

The belt was never anything more than sales hype...

Hasse says, "You have been opening my eyes about that it doesn’t need to have a magnum belt to look cool."

Whether or not it looks “cool” has nothing to do with what the bullet does several hundred yards downrange at the target, Hasse. We design essentially anything for a specific purpose based on existing knowledge, and hope our design delivers to us that small, additional piece of “unknown performance” we want when we deign to go where no man has gone before.

Medium-bore and big-bore cartridges never really needed a belt. In the later 1940s, Roy Weatherby designed his rifles and cartridges. For six to seven years, Americans had been denied new tires for their cars and new rifles for their gun cabinets. They wanted to go out and get new things, and they very badly wanted to do such. So along comes Roy Weatherby. He has designed these monster cartridges and these beautiful, albeit expensive, rifles in which to fire them. In order to sell them, he had to come up with an idea that would make people desire with a smokin’ hot passion to race out and buy them. So he said his cartridges were so very, very, very powerful that they needed a belt to contain all that thunder and fury.

Only real men-- big, strong, tough, burly men-- could handle Weatherby’s rounds. Or so he said. Well, every man wants to be known as big, strong, tough and burly, correct? Sure! What tough man is gonna shoot a wimpy cartridge? To add to the “awe factor,” Weatherby designed his bolts with nine locking lugs, like the breech locking system of big naval guns. Surely, these awesomely powerful rifles needed such a super-strong breech locking system. It just added to the hype.

And that’s all it was-- hype. Just sales hype. America exited WW II as the strongest nation on Earth. Our factories were all ginned-up for war. We felt we could produce anything, and do it in record time. Now, the war was over. That manufacturing capability needed an outlet. People wanted new toasters, new blenders, new tires, new cars and new rifles. Roy sold his new magnum rounds and rifles, and people bought ‘em. Winchester and Remington didn’t sit on their hands. They also designed rifle rounds using the new, “gotta-have-it” belt. There was a period of time when the rifle companies were trying to outdo each other with how powerful and strong their rifles were. It all was never more than anything but sales hype.

Now we are in the present day. The 300 RUM holds 105 grains of water, and has no belt. The 300 WinMag holds 87 grains of water, and is belted. What’s the difference? The RUM was designed in 1998, using present-day technology. The WinMag was designed in 1963 when if your rifle didn’t use a belted cartridge, you were a girly-man. No man in 1963 wanted to be known as a girly-man. The WinMag is still made because so many were over the years. Can’t leave those folks out in the cold, can we? Truth is, at least to me, if a round needs a belt for “extra strength,” maybe the buyer needs to look at a round with “extra strength” already designed into it. The thickness of the sidewall webbing on a 375Ruger shell is about .050 inches (1.27 mm) at the head. That’s plenty when the round is contained in a rifle. It’s the steel receiver that contains the pressure, not the brass case. Roy knew this. He just didn't tell anyone...

 

Hasse says, "You have been opening my eyes about that it doesn’t need to have a magnum belt to look cool."

Whether or not it looks “cool” has nothing to do with what the bullet does several hundred yards downrange at the target, Hasse. We design essentially anything for a specific purpose based on existing knowledge, and hope our design delivers to us that small, additional piece of “unknown performance” we want when we deign to go where no man has gone before.

Medium-bore and big-bore cartridges never really needed a belt. In the later 1940s, Roy Weatherby designed his rifles and cartridges. For six to seven years, Americans had been denied new tires for their cars and new rifles for their gun cabinets. They wanted to go out and get new things, and they very badly wanted to do such. So along comes Roy Weatherby. He has designed these monster cartridges and these beautiful, albeit expensive, rifles in which to fire them. In order to sell them, he had to come up with an idea that would make people desire with a smokin’ hot passion to race out and buy them. So he said his cartridges were so very, very, very powerful that they needed a belt to contain all that thunder and fury.

Only real men-- big, strong, tough, burly men-- could handle Weatherby’s rounds. Or so he said. Well, every man wants to be known as big, strong, tough and burly, correct? Sure! What tough man is gonna shoot a wimpy cartridge? To add to the “awe factor,” Weatherby designed his bolts with nine locking lugs, like the breech locking system of big naval guns. Surely, these awesomely powerful rifles needed such a super-strong breech locking system. It just added to the hype.

And that’s all it was-- hype. Just sales hype. America exited WW II as the strongest nation on Earth. Our factories were all ginned-up for war. We felt we could produce anything, and do it in record time. Now, the war was over. That manufacturing capability needed an outlet. People wanted new toasters, new blenders, new tires, new cars and new rifles. Roy sold his new magnum rounds and rifles, and people bought ‘em. Winchester and Remington didn’t sit on their hands. They also designed rifle rounds using the new, “gotta-have-it” belt. There was a period of time when the rifle companies were trying to outdo each other with how powerful and strong their rifles were. It all was never more than anything but sales hype.

Now we are in the present day. The 300 RUM holds 105 grains of water, and has no belt. The 300 WinMag holds 87 grains of water, and is belted. What’s the difference? The RUM was designed in 1998, using present-day technology. The WinMag was designed in 1963 when if your rifle didn’t use a belted cartridge, you were a girly-man. No man in 1963 wanted to be known as a girly-man. The WinMag is still made because so many were over the years. Can’t leave those folks out in the cold, can we? Truth is, at least to me, if a round needs a belt for “extra strength,” maybe the buyer needs to look at a round with “extra strength” already designed into it. The thickness of the sidewall webbing on a 375Ruger shell is about .050 inches (1.27 mm) at the head. That’s plenty when the round is contained in a rifle. It’s the steel receiver that contains the pressure, not the brass case. Roy knew this. He just didn't tell anyone...

Wow! I really like to hear history of calibers! That is really interesting, and i know exactly what you mean! It jst hitted me when i was looking on measures on the 375 Ruger and compared it to 338WinMag. The belt on 338 has the measure as the rim on the 375 Ruger. That´s what started to interest me, that a case without belt could contain moore powder. That´s why i asked of there is possible to fit a 458 cartridge with a brass that has no belt? Like a 375 Ruger brass that has a angle and a neck. Or does i have to go up to a gibs cartridge or something like that?

 

Ruger equals Lott

Hasse-91,

Yes you can make a 450 Ruger, by minimizing the case body taper. Mine will be a little short like the 375, but for a different reason. Short Chambered 458 Win Mag. barrels come -0.050 inch from No Go. I intend to make sure a 458 Win Mag. can't be accidentally chambered. I will be 0.030 inch short of the GO gauge. The gentleman from Cody, Wyo. who likes Newtons, has done up a 450 x 2.5 inch with the Newton's 23 deg. shoulders. He has chrono'd 458 Lott velocities out of this wildcat. Maybe its the larger powder column, or the scant shoulders, but it gives you the Lott's velocities, and assuredly, all of the 458 Lott's recoil, in a standard length case, which will work through a Military Mauser action.

My #1` forming die puts a 26 deg. shoulder into a minimum tapered 375 Ruger Basic case, and will be very close to his wildcat. I left a longer neck, so I can trim it back to the -0.030 inches in a short chambered 458 Win. Mag. replacement barrel blank. Please note that the earlier mention of using a L. Walther deep chambered barrel, won't work in this case. This one will have to be reamed into a short chambered barrel blank by a G.S. and will have its very own GO gauge. It's still a smidge over a one caliber neck, when its trimmed back this far. As I am left handed, I can't shoot a Mauser quick enough to use it as a D.G. rifle, and this 458 Lott recoil will be absolutely brutal, in anything under ten lbs..

However, this 458 Win Mag. cartridge length, leaves plenty of steel behind the bottom bolt lug, to goose up the pressures. My trimmed back case volume is 97grs. of H20 in a formed case, and not a fired one. I would pick up a little more in a fired casing. So it should run a tad over half the difference between the Win Mag. and the larger Lott.

For this boomer, I will have to spring for a new reamer, and Go Gauge, plus a replacement short chambered barrel blank. But my form die with a little help from other dies on my shelf, would let me start shooting. A Hornady Generic New Dimension sleeved seating die, would seat and crimp. Putting an elliptical expander for 458 into my RUM F.L. die, would let me expand the tight necks I get out of my #1 forming die. This is #1 of a five die set, which forms the basics down to my 8mm Mag. The #5 die, in this set, is the F.L. sizing die for this wildcat 8mm Mag.

I have the .416 and the .323 numbers up and running. I calculated that the 9.3mm Mag. will split the difference, and that's why I asked you for your field results. It would make more sense, than making up a 450 Magnum, which I would probably never use, effectively, left handed.

But as I mentioned earlier, the best bullet dedicated to Midnight Sun hunting, seems to me to be those .416 cal. Speer 350 gr. Mag. Tips. But these pills may be hard to come by in your country. Even here in Idaho, shelf displays can jump from .375 directly up to .458. Conversely, no country has had .416 caliber military weapons in years past. But today, I'm not sure how your country would deal with the .416 Chey Tac's. I think that they are only experimental, but who knows? These get expensive in a hurry, to ship around the world. A 375 Taylor will be cheaper to feed, if you can handle the sharper recoil.

 

Hasse-91,

Yes you can make a 450 Ruger, by minimizing the case body taper. Mine will be a little short like the 375, but for a different reason. Short Chambered 458 Win Mag. barrels come -0.050 inch from No Go. I intend to make sure a 458 Win Mag. can't be accidentally chambered. I will be 0.030 inch short of the GO gauge. The gentleman from Cody, Wyo. who likes Newtons, has done up a 450 x 2.5 inch with the Newton's 23 deg. shoulders. He has chrono'd 458 Lott velocities out of this wildcat. Maybe its the larger powder column, or the scant shoulders, but it gives you the Lott's velocities, and assuredly, all of the 458 Lott's recoil, in a standard length case, which will work through a Military Mauser action.

My #1` forming die puts a 26 deg. shoulder into a minimum tapered 375 Ruger Basic case, and will be very close to his wildcat. I left a longer neck, so I can trim it back to the -0.030 inches in a short chambered 458 Win. Mag. replacement barrel blank. Please note that the earlier mention of using a L. Walther deep chambered barrel, won't work in this case. This one will have to be reamed into a short chambered barrel blank by a G.S. and will have its very own GO gauge. It's still a smidge over a one caliber neck, when its trimmed back this far. As I am left handed, I can't shoot a Mauser quick enough to use it as a D.G. rifle, and this 458 Lott recoil will be absolutely brutal, in anything under ten lbs..

However, this 458 Win Mag. cartridge length, leaves plenty of steel behind the bottom bolt lug, to goose up the pressures. My trimmed back case volume is 97grs. of H20 in a formed case, and not a fired one. I would pick up a little more in a fired casing. So it should run a tad over half the difference between the Win Mag. and the larger Lott.

For this boomer, I will have to spring for a new reamer, and Go Gauge, plus a replacement short chambered barrel blank. But my form die with a little help from other dies on my shelf, would let me start shooting. A Hornady Generic New Dimension sleeved seating die, would seat and crimp. Putting an elliptical expander for 458 into my RUM F.L. die, would let me expand the tight necks I get out of my #1 forming die. This is #1 of a five die set, which forms the basics down to my 8mm Mag. The #5 die, in this set, is the F.L. sizing die for this wildcat 8mm Mag.

I have the .416 and the .323 numbers up and running. I calculated that the 9.3mm Mag. will split the difference, and that's why I asked you for your field results. It would make more sense, than making up a 450 Magnum, which I would probably never use, effectively, left handed.

But as I mentioned earlier, the best bullet dedicated to Midnight Sun hunting, seems to me to be those .416 cal. Speer 350 gr. Mag. Tips. But these pills may be hard to come by in your country. Even here in Idaho, shelf displays can jump from .375 directly up to .458. Conversely, no country has had .416 caliber military weapons in years past. But today, I'm not sure how your country would deal with the .416 Chey Tac's. I think that they are only experimental, but who knows? These get expensive in a hurry, to ship around the world. A 375 Taylor will be cheaper to feed, if you can handle the sharper recoil.

Oh, okey! Is there a caliber that´s factory made that has the name 450 Ruger? Or is it just a wildcat? Even if the case has the same length like a 458 WinMag, it should be able to contain alittle moore powder because of it´s larger diameter. Maby give the bullet alittle moore speed to.

Okey, well there is quite much bullets choises to the 9,3mm. Just find something that fit your choise. The 325gr Norma Oryx is quite interesting, bonded soft point. Really good for moose and bear.

 

.458 Accurate Reloading

This round uses the readily-available 375RUM brass, has a 2.550-inch case length, has the .532" head diameter we like, no bothersome belt and presently has 58 loads available for it. It's been around several years, so I should think ready-to-load brass is available for it. Look around; see what you can find about it...

 

This round uses the readily-available 375RUM brass, has a 2.550-inch case length, has the .532" head diameter we like, no bothersome belt and presently has 58 loads available for it. It's been around several years, so I should think ready-to-load brass is available for it. Look around; see what you can find about it...

What caliber are you talking about nvshooter?

 

Reamer for 375Hasse Sledgehammer...

This is what the reamer grinder would be looking at when he grinds your reamer. This template is from Dave Manson, but I have seen it used by other grinders. It's just representative; all that matter are the dimensions.

Sorry it's fuzzy. It's a scan of a scan of a scan. Pretty krappy, huh?

 

Brass for Hasse's .458 super-boomer...

Quality Cartridge 458 Accurate Reloading

.458 Accurate Reloading brass: 20 cases; 60 bucks. Don't let 'em lay. Gotta be reloadin' dies available if the brass is being sold commercially. Redding? Forster? RCBS? Hornady? Don't know. Shouldn't be hard to find, though...