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Bullet weight for barrel twist- 7mm

 
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Old 12-06-2010, 10:40 PM
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Bullet weight for barrel twist- 7mm

I have a 7mm Rem Mag with a barrel twist at 1 in 9.5. What is the ideal weight for this twist? I have AR-15s in 1-7, 1-8, and 1-9 and have all of them figured out. Lots of good info out about for ARs and barrel twist. But I have never heard much about larger cals particularly 7mm RM.

As always, thanks for any help.
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Old 12-07-2010, 12:49 PM
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Re: Bullet weight for barrel twist- 7mm

Quote:
Originally Posted by CLICKBANGBANG View Post
I have a 7mm Rem Mag with a barrel twist at 1 in 9.5. What is the ideal weight for this twist? I have AR-15s in 1-7, 1-8, and 1-9 and have all of them figured out. Lots of good info out about for ARs and barrel twist. But I have never heard much about larger cals particularly 7mm RM.

As always, thanks for any help.
It actually boils down to length of the bullet and not necessarily the weight. I would google twist rate charts. There is some good data out there to determine twist rates. It is also determined somewhat by velocity. Higher velocity means less twist rate (to a lesser degree). Generally speaking, I am guessing around 160 grains.........Rich
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