Quote:
Originally Posted by TechJunkie
I appreciate your reply. My question centers around the 1:9 Sport II keeping a 50-55 grain round stabilized out to 200 to 300 yards. If at this range stability is not an issue with the 1:9 twist then I would expect the Sport II to pattern similarly to the 1:8 AR556. Is this what you are saying as well?
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The 1:9 twist is the optimal twist rate for 55 gr. If you are going to shoot 55 gr and 62 gr rounds, you will not see any benefit to the 1:8 twist. If you are going to shoot longer projectiles than typical of the 55-62 gr range, you may see some advantage.
However, each individual barrel is different. I could tell you that my 1:9 twist AR is more accurate than my 1:8 twist AR... but a sample of one is meaningless.