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JDJones75, 257 STW information...

 
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Old 08-25-2004, 06:54 PM
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JDJones75, 257 STW information...

JDJones75,

I have rechambered several 25-06 Remington 700 BDLs to the 257 STW with 26" barrels and and they are getting right at 3950 fps with the 100 gr Ballistic Tip and 3650-3700 fps with the 115 gr Ballsitic Silvertips.

I prefer a 28" pipe but his round will still give you 200 fps over the 257 WBY out of a 26" barrel.

You will also not have to put up with the Wby double radiused shoulder.

The Rem 700 is the best action for such a conversion because all that is needed is to rechamber the barrel, open up the bolt face and install a Sako extractor.

I must warn that a custom barrel is by far the best option for this round as any barrel that will foul even moderately with a 25-06 will really do so with the STW, plus your still dealing with the factory tube so sometimes you get a great shooter, sometimes just a decent shooter.

It is a bit more of a gamble recutting a factory pipe.

Good Shooting!!!

Kirby Allen(50)
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

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Old 08-25-2004, 08:31 PM
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Re: JDJones75, 257 STW information...

FiftyDriver
What is wrong with the Weatherby double radius shoulder?
Lynn
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Old 08-26-2004, 04:58 AM
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Re: JDJones75, 257 STW information...

Fifty-

What powder(s) are using in the 257 STW? Thanks.

Jim
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Old 08-26-2004, 07:24 AM
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Re: JDJones75, 257 STW information...

Lynn,

For a big game round, there is nothing wrong with the Wby shoulder, even as a match round they are ok but I personally feel the conventional shoulder of 35 to 40 degrees will align the bullet more accurately to the axis of the bore then the Wby design.

I have seen no difference in velocity or powder burns either.

It may be more of a personal thing but I prefer a conventional shoulder as do many others in the extreme range hunting crowd.

Good Shooting!!!

Kirby Allen(50)
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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Old 08-26-2004, 07:32 AM
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Re: JDJones75, 257 STW information...

JGH,

I have found Rl-25 and H-1000 are the best performers with the 100 gr bullets. Rl-22 will get good velocities but the load density is pretty poor.

FOr the heavier 115-120 gr bullets, H-Retumbo has really produced the best combination of velocity and consistancy.

I like the Hodgdon powders in rounds like this as they are very stable under a range of temperature changes which is a very good thing with a case that will hold 90 gr of powder and shoots a 1/4" bullet.

There are a host of others that would also work but these are the best three I have tested to date.

As for lighter bullet, less then 100 gr, I do not recommend them to be used in the 257 STW because they will not produce consistant powder burns and generally the smaller Wby will produce the same velocity with the light weight bullets.

100 gr is still quite light and will only work its best at near max to max loadings. The 115-120 gr bullets are a much better match to this case but most guys want the extreme speed.

TO me a 115 gr Partition loaded faster then any factory 22-250 with a 55 gr bullet is pretty impressive.

I have ordered some 130 gr ULD rebated boattail hunting bullets from Richard Graves who owns Wildcat Bullets and these should really produce some impressive results in the big STW.

Good Shooting!!!

Kirby Allen(50)
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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Old 08-26-2004, 08:24 AM
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Re: JDJones75, 257 STW information...

Fiftydriver:
who do you consider a good custom bullet manufacture. I e-mailed North Fork but never heard back from them. I noticed your mentioning Wildcat and I also know nothing of them. Sorry if I posted this in the wrong place but thought i would as as this was your subject.
Thanks
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  #7  
Old 08-26-2004, 03:53 PM
 
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Re: JDJones75, 257 STW information...

Thanks Fifty , the barrel to be worked would be a 26" Shilen 1-10 twist , I checked some of the fires cases on a Sinclair concentricity guage and they seem to be very strait so I'm assuming that the chamber is cut pretty strait.
The deal is that my switch barrel gun is a Savage and its setup for magnums , I was just wanting to be able to swap out the barrel and not worry about the bolt and the mag having to be changed , I'm lazy I guess.
I would be intersted in seeing what a 100gr Balistic tip would do to a deer at 200yds when launched at near 4000fps. ,I guess that it kinda turns the deer bullets into varmint bullets
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