Quote:
Techjunkie wrote:
If all 1:9 and 1:8 refers to is the weights of bullets the AR can stabilize well then my question would be does the Sport II stabilize 55 grain rounds at 200 yards comparable to the AR556?
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For bullets of 60/62 grains and below, the difference in stability between 1:9 and 1:8 will be insignificant. See this article for more detail:
How to Pair Barrel Twist Rates with Bullets - Guns & Ammo
If you are going to be shooting 55 grain bullets and plan to slavishly follow twist rates in your selection process, then you will note that the article points out that 1:8 barrels can spin 55 grain bullets too fast, so your choice of the S&W would become academic.