1-7 twist with 50 and 55 grain bullets
I have Colt HBAR with a 1-9 twist barrel and it shoots 50 and 55 grain bullets fine. Considering a Colt 6920, but they only come in 1-7 twist. I want to stay with the cheaper factory ammo that come with 50 and 55 grain bullets and wonder if a 1-7 twist barrel will result in large group sizes. Appreciate hearing the experience of those using 1-7 twist AR barrels with 50 and 55 grain bullets.
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I have a Colt 6920 and all I shoot in it are 55 grain 5.56mm and .223 full metal jacket ammo. Works just fine and groups well if you use quality ammo. I don't use the steel case stuff so I can't speak to that.
In fact, of the AR-15 rifles I currently own, all are 1-7 twist except for my Windham CDI which is 1-9. They all shoot so similar it is difficult to tell the difference between targets for each. Then again, maybe that's just because I can't shoot any better than that.
Seriously, you don't have anything to worry about with 55 grain bullets and likely 50 as well. Good luck with your rifle.
In fact, of the AR-15 rifles I currently own, all are 1-7 twist except for my Windham CDI which is 1-9. They all shoot so similar it is difficult to tell the difference between targets for each. Then again, maybe that's just because I can't shoot any better than that.
Seriously, you don't have anything to worry about with 55 grain bullets and likely 50 as well. Good luck with your rifle.
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