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Old October 28, 2008, 11:08 PM   #1
nutsack
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wanting to convert 7mm to a new caliber

I got a winchester model 70 I want to have rebarrled it is a 7mm rem mag now but was thinking about changing calibur but not sure what is compatible thought about a 257 weatherby does anyone know if this can be used or if another caliber would be better looking to reach out and touch something with this gun
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Old October 29, 2008, 01:53 AM   #2
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Anything with the standard belted magnum headsize

That will fit in the action will work with just a barrel change (and psooibly a tiny bit of tweaking of feed rails, but probably not. Going to a .30-06 head size cartridge isn't really practical, as not only the bolt will need to be altered/replaced, but the action rails are already "opened up" for magnum size cases (compared to .30-06 size) and adding & shaping metal so they would work with smaller cases would be cost prohibitive.

Nearly anything in the belted magnum class will work, provided it isn't too long for you action (particularly the magazine). If you want something else, you would be better off getting a different rifle.

I believe .257 Wby will work, but check the case and OAL length to be sure.
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Old October 29, 2008, 07:19 AM   #3
ActivShootr
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How far do you want to shoot?!
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Old October 29, 2008, 08:49 AM   #4
nutsack
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its kind of a tinker toy

Want to shoot as far as I can
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Old October 29, 2008, 09:05 AM   #5
mkg
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Quote:
Want to shoot as far as I can
At what paper, game ?

Mike
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Old October 29, 2008, 09:55 AM   #6
nutsack
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mainly paper would also like hunt coyote and other small game and varmits
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Old October 29, 2008, 10:00 AM   #7
ActivShootr
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The 7 mag will do both.
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Old October 29, 2008, 10:08 AM   #8
nutsack
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so do u like the 7mm or do u have a favorite I like it but I like to be unusual and different than the others
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Old October 29, 2008, 10:30 AM   #9
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I like the oddballs too I was just being practical.
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Old October 29, 2008, 11:05 AM   #10
Harry Bonar
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7mm mag

Sir;
Keep that 7mm magie - it is a sensational caliber. Although it does not have enough frontal area for the great bears it is a very fine caliber - I'd never re-barre;l it.
Harry B.
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Old November 17, 2008, 01:57 PM   #11
ForneyRider
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I thought about same thing.

I have seen Remington 7mm Magnum AI dies.

What about 338 RUM or 338 Lapua?
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Old November 17, 2008, 04:45 PM   #12
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You can rebarrel a 7 Rem Mag to a .264 Mag which uses same case but be warned that .264 barrels have a reputation for being burned out rather quickly. The .257 Wby would most likely have even shorter barrel life as you would be burning the same/larger amount of powder in a smaller diameter bore.
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Old November 18, 2008, 06:48 PM   #13
oneounceload
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if you want something different, (personally, I wouldn't change the 7mm), you could wildcat it to something like 6-284

or try different 7 loads - they will reach as far as anyone can shoot
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