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  #1  
Old 01-05-2013, 03:17 PM
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New old guy 25 STW


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Hello all!

I need a little help if you would be so kind....I just picked up a Remington 25 STW and can not find a stinking thing about the cartridge. What will fit it?....is it a wildcat only?....any help you can send this way would be greatly appreciated.

I thank you kindly in advance
Dan
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  #2  
Old 01-05-2013, 03:38 PM
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.25 Shooting Times Westerner. That should get you started, at least you have the full name now. I have no idea who could supply load data or if ammo is available.
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  #3  
Old 01-05-2013, 04:03 PM
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Thanks for the reply Mike....I am familiar with the STW just not the 25 caliber.

Dan
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  #4  
Old 01-05-2013, 08:14 PM
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Dan,

The 25 STW is a necked down 7mm STW, which in turn, is a necked down 8mm Rem Mag.

You will almost certainly have to form brass yourself and it will be a tricky thing, coming up with anything more than starting points, on load data. The one thing you can bet on is that you'll want large quantities of VERY slow-burning powder. The H2O volume on this case is right around 97gr, with a usable volume in the mid to upper-80's, as a max.

Inspect the barrel with a bore scope and don't expect it to last all that long, if you load to its full potential. This thing is the very DEFINITION of an "over-bore" cartridge. To put it in perspective, it's got 13gr more capacity than the 257 Weatherby...which is remarkably over-bore, itself.

If you'd really like to load this beast, and you've got the dies n' such, shoot me a PM (when you get enough posts) and I'll help you model some loads.

Jason

ETA - There appears to be a good deal of reloading data available on this site:

http://reloadersnest.com/frontpage.asp?CaliberID=239

Last edited by broom_jm; 01-05-2013 at 08:17 PM.
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Old 01-05-2013, 08:55 PM
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Good luck not shooting the throat out of that one!
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Old 01-05-2013, 10:54 PM
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Originally Posted by Lundrunner View Post
Thanks for the reply Mike....I am familiar with the STW just not the 25 caliber.

Dan
There's a custom rifle maker named James Ferguson who builds a rifle he named the 257 Hot Tamale and it's a .257-7mm STW. Here's a link to his site, I don't know what all is available where info is concerned but maybe he can point you in the right direction. He loads ammo for all the rifles he builds and gives the recipe to the new owners.

ferguson hot tamale .257-7mm stw rifle | ferguson custom rifles

Last edited by fred243; 01-05-2013 at 10:58 PM.
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  #7  
Old 01-06-2013, 05:01 AM
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There is a little formula I use to compare the case capacity to bore cross section of one round, to other rounds. The end result of this formula is an integer and the lower the number, the more "over-bore" a cartridge is and the slower powder you would need to use. A few examples are the 264 Win Mag, at 6.55 and the 257 Weatherby at 6.10.

The 25 STW scores a 5.2 on this index, making it the lowest number out of over 200 cartridges that I've done the calculations on. I believe I'd be sourcing a new barrel at the same time I was working up loads for that one.
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Old 01-06-2013, 08:54 AM
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Thanks for the great information gentlemen!.....seeing how I have little to no money wrapped up in this rifle I may just consider re-barreling. This rifle was shot little to none and it looks great. What would be the most logical caliber to turn this into?

Please forgive my ignorance but I am a pistol guy.....

Thanks again for the help
Dan
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  #9  
Old 01-06-2013, 09:01 AM
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You have a belted magnum bolt face, so the sky is practically the limit. Anything with a rim diameter around 0.532" should be fairly easy.

If it was me, I'd surely have to try the .257 STW. Just because I had it. Form 50 pieces of brass and that might go the life of the barrel with care, or a hundred would surely, tops.

If you want another fast .25 cal then the .257 Weatherby is fun and practically cheap compared to the .257 STW
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  #10  
Old 01-06-2013, 09:02 AM
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I've only heard it refered to as the .257 STW . It's an absolute screamer . I have a friend that built one on a T/C ProHunter (originally 25-06) . 87 grainers out of that 28" barrel over a stiff charge of H-1000 or IMR 7828 will exceed 4000 FPS , and vaporise Coyotes like you've never seen ! It may take some time to find the right combination of components for accuracy . But once you find them , you have a 500 yd. point blank rifle ! T/C evidently uses some pretty good stainless in their barrels , throat erosion has yet to become an issue with Thad's rifle .
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  #11  
Old 01-06-2013, 09:52 AM
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It's a heck of a round, Ferguson loads the Barnes 100gr TSX to 4000 fps. The host of the show Western Extreme uses a Hot Tamale to hunt with and has taken big bull elk at 300+ yards, dropping them where they stand with that same load.
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  #12  
Old 01-06-2013, 09:59 AM
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You could increase the throat life by pausing more between shots and perhaps running a bore snake through after every one to minimize carbon build up in the throat. Still, that amount of hot gas getting forced through that small throat is going to quickly take a toll. Copper fouling is likely to be an issue too. For a long range hunting rifle though, once you get it dialed in, you shouldn't need to shoot it much. If the throat and rate of twist allows, I'd go with longer heavier VLD type bullets. I think a .264 STW would be a better fit since that caliber has a lot of VDL bullets to choose from.
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  #13  
Old 01-06-2013, 11:55 AM
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Welcome Landrunner.

MikeG, I agree. "...try the .257 STW. Just because I had it. Form 50 pieces of brass and that might go the life of the barrel with care, or a hundred would surely, tops."

Only change I'd suggest forming just 5 rounds to play with. Since this is a used rifle, I've found the large overbore used rifles are sold because the barrel has already been shot out. They even sell/turn around maybe 6 or more times with a shot out barrel. % cases will be plenty!! Sorry Landrunner.

You might try some 416 rem mag cases, they have same 9mm as a base and are easier to come by. the 416 is 2.850 case length; and with the 41 cal you will have more than enough case for the 257 STW.
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Old 01-06-2013, 12:30 PM
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[QUOTE=HarryS;653492]Welcome Landrunner.

Only change I'd suggest forming just 5 rounds to play with. Since this is a used rifle, I've found the large overbore used rifles are sold because the barrel has already been shot out. They even sell/turn around maybe 6 or more times with a shot out barrel. % cases will be plenty!! Sorry Landrunner.

Harry....If this rifle has been shot at all it may have 10 rounds threw it. The whole gun is in spectacular shape....that and I have very little in it. Thats why I asked if I should re-barrel.

Dan
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  #15  
Old 01-06-2013, 12:42 PM
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Nosler and Remington both make 8mm mag brass, but the nosler will be high dollar. Like MikeG said a re-barrel if you wanted to 257 Weatherby would be a great round. The numbers Broom provided are interesting and if it's the worse out of 200 cartridges then it can't last very long for sure ( barrel ), couple that what you would have to do for ammo and a re-barrel sounds like the best idea IMO anyway.
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  #16  
Old 01-06-2013, 07:54 PM
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I didn't mean to dissuade you from shooting it...I know if I had a rifle like that, along with the dies, I would surely put at least a few hundred rounds through it, to see if it's shot out or not. (NOTE: Just because a rifle like that is in pristine condition on the outside doesn't mean the bore is still in good shape. Oftentimes guns of that type will be babied, never seeing anything but a soft, padded case or a padded shooting rest.)

Now, if you don't have dies or brass, and you aren't really interested in spending several hundred dollars just to play around with a very unique cartridge, it probably would make sense to rebarrel it. There was a great guy who helped make this website into what it is, today. He was especially helpful when new guys came along and had questions. His pet rifle was an 8mm Rem Mag, the parent round to the 25 STW. You could do far worse than to rebarrel your new rifle to that cartridge.
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  #17  
Old 01-07-2013, 07:49 AM
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I have a round setting in front of me right now.We bought the reamer but as of today i have not bought an action to build it on.I have a friend that makes barrels.I have debated on it for sometime because I have a 257 Weatherby and a 25-06 Ackley.The 25 STW will out preform the Weatherby but not by much.I may build it on a Ruger #1 with a 28 inch barrel.It will take a lot of slow powder to get the full benefit of such a large case.Don't expect this barrel to hold up for several hundred rounds,my guess is 500 to 750 will be it.You should be able to push a 100 gr around 3900 fps.I know of others who say more but in the real world be careful.
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  #18  
Old 01-08-2013, 02:14 PM
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Gentlemen....I appreciate your help immensely. I at least now have some options to look at. I may even have to start reloading rifle cartridges....and when the wife asks what I need another press for I'm sure you wont mind me blaming all of you! Once again thank you....
Dan
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  #19  
Old 01-09-2013, 03:06 PM
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You might just want to cut it off by an 3/4 inch and rechamber to the 257 weatherby
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  #20  
Old 01-11-2013, 10:13 AM
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If you look , you should be able to find some 7mm STW brass , remington made a bunch of it when they were chambering for it . I'm 99.9% sure , that you would have to neck turn 8mm Rem. Mag. brass , which isn't a big deal if you already have the tools to do it . Just another expence if you don't ! That is one wicked cartridge for reaching out and touching something !
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