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My rule of thumb is if it works don't mess with it. That gun has a 1/10 twist so a 168 gr SMK at 2750 out the muzzle should still be super sonic all the way out to 1000. I shoot 155's in mine but it has a 1/12 twist.
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Government is like a baby. An alimentary canal with a big appetite at one end and no sense of responsibility at the other. - Ronald Reagan
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