Shooters Forum banner

375-08 Jaguar

2 reading
20K views 22 replies 16 participants last post by  carpooler  
#1 · (Edited)
Hello, I,m new here and would like to take this opportunity to promote my cartridge. Its made on the 308 case and provides a way to chamber the 375 bore in a wide variety of guns not usually associated with that caliber. I have always loved the savage 99 but was never much impressed with the chamberings offered. Big bore leverguns that did have interesting chamberings have limited range due to the obvious fact of flat nosed bullets in tube magazines. The jaguar allows one to load bullets from 200 to 300 grains in spitzer,round,flat and semi-spitzer designs and the ha ndloader has a bullet selection that rivals any .30 caliber The case proved to burn powder very proficiently and a 225 grain spitzer will do 2500 fps out of a 24" barrel. The 300 gainroundnose will do almost 2000fps. So what we have is 444 marlin punch with a point blank range of 220 yards. Have taken a deer and a pig with it so far. They went down like some one pulled the plug out of the wall! I have the reamer and alot of loading data. The 225 spitzers carry a foot-ton of energy out to 230 yards and rate 140 on the thornily index. Hope this finds intrest with a few of you. Thanks
 
#4 ·
whitehunter35 said:
John,

Very much interested. Who could do the work if a fellow wanted to convert a 99 to this cartridge?

Steve
To White hunter. I would recomend a gunsmith in your neck of the woods as the shipping process of the gun back and forth to california and our economy would add to the burden of your wallet. Your gunsmith must be aware that finish reaming is neigh on impossible after the barrel is on the reciever because there is no staight line of entry for the tool. He should come as close as he dare before installing the barrel. The few thousands of an inch left to let the bolt close on a cartridge can be effected by lapping the rear of the bolt until it closes. If you cannot find any-one where you live I will get you the best deal I can from my man. The use of the reamer is free but I need a deposit to ensure its return, as you can well understand.Upon the return of the tool so does your deposit return to you. Simple. I have no intrest in a profit at this point, just the good fun of sharing a good idea.
 
#5 ·
Bandito said:
What was the bullet used and the results or wound characteristics on the pig and deer? 'Dito
To Bandito. The deer was in the woods, a 60 yard shot. The bullet was a hawk 250gr. roundnose at about 2100fps. Caliber size in...cigarette pack size hole out.Absolute overkill. The supersoft hawks mushroom almost by falling on the floor. 2.5 x diameter is the norm. That load is more for animals in excess of 500 lbs. The pig was a great shot. Running away at about 150 yards. The 225 gr. spitzer from hornady at 2500fps gave a distinct "TWACCCKKK"!! when it hit the pig of a 110 pounds or so.It hit the center of the back at an angle obliterating 4 ribs in a row. Through the lung down the trachea where it finally stopped in the jaw under the base of the tounge. Perfect mushroom,90% weight retention and .64 caliber size.The animal was dead before it hit the ground, or so it seemed to me. I would hunt anything,any where with this cartridge given the right bullet for the job.
 
#6 ·
John,

Good points. I am still in the conceptual stage, and have been thinking on this platform off and on since we last corresponded.

My current line of thought is towards the savage 10 series, just for the ease of barrel mounting portion. If a fellow started with a 358 barrel, it would stand to reason for me that the chamber would already be the right size already, or very close? What about a 308 barrel, if the contour was thick enough?

This may end up being a long process, as I have one pet project that has priority on the hot seat, and I am moving ahead very slowly with the first one. It may take a few months. Can I give you a shout when I am ready to execute?

thanks.

Steve
 
#7 · (Edited)
Whitehunter. The barrel change is beyond simple for any gunsmith. The Savage M10 needs a barrel (with the right threads) of the right caliber.He chambers it, screws the barrel in and sets it with a set of go, no-go gauges. Tighten the barrel nut and get out the cartridges. It is ready to shoot. Most any top quality barrel supplier could supply the .375 barrel in a Savage configuration. Ask a gunsmith of your choice about this. It isn't terribly expensive to end up with the action compatible 'cat of your choice. In the case of the .375-08 it sounds splendid. I may have to see about that in a 99. Should be the perfect pig gun. 99 C's in .308 should be easier to come by than most other 99s. Good luck and shoot straight. 'Dito
 
#8 ·
The savage 99 was wildcatted with a .375/284 giving it a 60 + gn capacity. Now if you can get all the necessarie for the conversion I would recommend using one of the box mag versions, though the article I read used a rotary. This was a Petersons annual mag I used to get, I can't remember the title of the it. But it had to do with reloading. This took place over 20yrs ago.
 
#9 · (Edited)
Yes, you are all correct about a savage 10 being the simple way to do a rebarrel. Not to mention, because of the barrel nut you dont have to give up the original chambering. They say with the special wrench you can convert back and forth with not much adew. I must say though, my fixation with the model 99 led my to do my wildcat in the first place. I loved the rifle but was not exited about any of the chamberings offered. I think using the 08 as the parent case rather than the .284 was smart. You can literally pick up brass for the jaguar at your local range or buy it in any store in the country.The few grains of capacity that the .284 has over the 08 has no real effect for a hunter like me. The .375 bore brings the weight class into being a real meat stopper and not a paper puncher! I primarily hunt wild pig here in central california.It is a known fact they die very reluctantly and I have seen pigs hit with 7mm and 30 calibers and although the shots were all fatal, pigs seem to muster up some tenacity and run to die 150 yards away deep in the brush.I like my game to go down where they stand(or run).Now, many chamberings do that, .444/.358 win./35 whelen,etc but that did me no good cause I wanted that performance from a 99,and I got it. So you could say the fuction had to fit the form in this case. I would use the 375-08 with confidence on animals up to large blackbears,elk and moose. I think it would take a grizzly a pinch, if you used 270's or a 300 grainer. My next project will be to cut down and neck out a 425 westley richards case to .458 with a sharp shoulder , 2.8" o.a.c. length and load em with 400grain Barnes spirepoints, from their original line up. then, I ve got to get them to come out of a 99. That is my next dream "The dangerous game savage".
 
#12 ·
Hi. I'm new here and while I have not done any wildcatting, the 375-08 has been an interest of mine as well. I am glad someone has been working on this. I hunt mostly river bottoms, flooded timbers, swamps, etc, so don't need those longe range calibers, but would like plenty of oomph with what I do have. Have been a fan of the 358 for some timem but have wanted to use cast bullets. I think the 375 would be better for heavy cast bullets and wonder if any has pursued this line of thought. Thanks.
 
#13 ·
I'm considering having a mold made

sdeprie said:
Hi. I'm new here and while I have not done any wildcatting, the 375-08 has been an interest of mine as well. I am glad someone has been working on this. I hunt mostly river bottoms, flooded timbers, swamps, etc, so don't need those longe range calibers, but would like plenty of oomph with what I do have. Have been a fan of the 358 for some timem but have wanted to use cast bullets. I think the 375 would be better for heavy cast bullets and wonder if any has pursued this line of thought. Thanks.
Haven't decided on weight and configuration yet? Not sure if I'll get a light weight for practicing/plinking or a heavy weight with a good meplat for our Alaskan bush. Have to see what kind of throat my gunsmith is going to do on my barrel.
 
#16 ·
hello john,i am presently building a .375-08 and would sure like to see your load data.i also built a.375-.284 wich i realy liked except it crowded the short action sako that i used. this 375-08 i am working on now is in a rem. short action,my favorite. as far as bullets go,the 250 sierra is a real good bullet for these kind of velocities.they penitrate and put down every thing i have pasted.this includes large black bears moose deer sheep.
h
John Dougherty said:
Hello, I,m new here and would like to take this opportunity to promote my cartridge. Its made on the 308 case and provides a way to chamber the 375 bore in a wide variety of guns not usually associated with that caliber. I have always loved the savage 99 but was never much impressed with the chamberings offered. Big bore leverguns that did have interesting chamberings have limited range due to the obvious fact of flat nosed bullets in tube magazines. The jaguar allows one to load bullets from 200 to 300 grains in spitzer,round,flat and semi-spitzer designs and the ha ndloader has a bullet selection that rivals any .30 caliber The case proved to burn powder very proficiently and a 225 grain spitzer will do 2500 fps out of a 24" barrel. The 300 gainroundnose will do almost 2000fps. So what we have is 444 marlin punch with a point blank range of 220 yards. Have taken a deer and a pig with it so far. They went down like some one pulled the plug out of the wall! I have the reamer and alot of loading data. The 225 spitzers carry a foot-ton of energy out to 230 yards and rate 140 on the thornily index. Hope this finds intrest with a few of you. Thanks
 
#18 · (Edited by Moderator)
.357-08 Jaguar is just what I am looking for!

Hello! I came upon this older thread while searching for a large-bore wildcat to re-chamber one of my 99 Savage rifles in. I think this .375-08 is just what I am looking for, and I hope the originator will respond to my post here. I welcome all information on this round, and would certainly be happy to rent a reamer if possible. I have a proper blank and suitable rifle on hand, and can make the dies in our shop. Thank you very much.

Regards,

Bruce Gray
 
#19 ·
Welcome to Shooters Forum, Bruce. Rules are to be nice and join in.

A moderator will be along shortly to remove the free advertising. ;)

As for 375-08, I don't think this one got TOO far off the drawing board, what with the 358 Winchester being so similar. If you really do want a 375 wildcat, the 375JDJ is a readily available round based on the 444 Marlin. It brings about the same case capacity, albeit with slightly lower pressure. Plenty of stomp out to 200 yards or so.
 
#20 ·
the 375-284 is the best way to get a large bore in a short action. It has 25% more powderthan the '08 and it has a larger shoulder. the 375-08 leaves me with thoughts about in-adequate shoulder to headspace upon. Just my thoughts.
 
#22 ·
375-Jaguar SMLE !?!

Hello, I,m new here and would like to take this opportunity to promote my cartridge. Its made on the 308 case and provides a way to chamber the 375 bore in a wide variety of guns not usually associated with that caliber. ... Hope this finds intrest with a few of you. Thanks
Mr. Dougherty,
I am a little late in this game.
I am thinking of getting a re-bore on an old Ishapore SMLE (7.62 NATO.)
A 10-shot 375-Jaguar is very attractive to contemplate.
I hope to have more to tell in the not-too-distant future.
Please check your PM for more detailed commo.
Thanks
Tim
 
#23 ·
Bullet maker's suggested game

Hi, this is a nicely researched post. Now, what bullets are made for which power levels? Are you using bullets made for 38-55's, 375 Winchesters, or 375 H & H magnums? I've had a Savage 99 A in 358Win Mag., and what bothered me was the time in flight for a 250 grain bullet, beyond 150 yards.

I've also owned a 375 Winchester 94, and a 284 Model 88. I spoke with some reloaders using the 284 Savage 99, and they weren't too happy. I never had any trouble with my Model 88, but the paper thin side walls in the walnut stock spooked me into selling it.

Unlike the one size fits all, Browning levers in 358, Savage at least put big deep finger grooves in this model 99-A's forearm. That's the other side of the coin. Recoil will try and wrench this forearm out of your grasp. Its gotta get worse, when you go up to the 375 caliber.

No factory has seen fit to use the 308 Win. case with larger than a .358 bullet. So how much shoulder do you have left?