ColoradoMinuteMan
Member
- Joined
- May 8, 2015
- Messages
- 702
While I haven't noticed a bit of difference between 55-75 gr accuracy in my 1/9 and 1/7 twist 5.56 barrels, I have a hell of a time with <150gr. factory ammo in my 1/10 .308 barrel. Not sure why, in theory it shouldn't be an issue.
I'm just researching 300 something or other. I'm not having any issues per say. I know twist rate has a lot to do with bullet weight and stabilizing those bullets. If you notice most .223 bolt guns have a 1/9 twist. Originally I think a lot of them were 1/12. AR's are mostly 1/7. The reason I think is the military decided that 1/7 was much better for the heavier bullets they are now using. Everyone wants what the military uses so 1/7 became popular. My experience is that an AR with a 1/7 twist doesn't handle 55 grain bullets as well as 170. I have a friend that shoots several 5.56 AR's a lot.
Because I don't have a 300 BLK I'm just asking a lot of questions and getting some opinions.