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8/7/2012 5:42:07 AM EDT
I'm starting my first build. I'm not sure what twist barrel to order. I want either a carbine or mid length barrel. What does every one use?


Thanks for your help,

Jack
8/7/2012 7:52:30 AM EDT
[#1]
It depends what weight bullet you want to shoot.   Slower twist for lighter & faster twist for heavier bullets.  I like 1 in 9 twist.  I don't want to shoot anythig heavier than 62 gr.
8/7/2012 9:28:00 AM EDT
[#2]
I like 1:8”, but if you are going to shoot a lot of 55gr and under the 1:9” would be a better choice.
8/7/2012 1:25:08 PM EDT
[#3]
It depends on what you plan to do with your AR. If for hunting, you may want a mid length or rifle length system with a faster twist, either 1/7 or 1/8. If for defence, you may want a 16" carbine with 1/9 or even 1/7 twist. Some find the 1/8 twist a good compromise. But usually most of us just get another AR when we have another application to deal with. Seems that it always starts with a one gun to do all things with. Then we add another upper for that other thing or situation that we want to be armed or prepared for. Then we get tired of the horrible task of switching uppers on the same lower, so we get another lower to go with the spare upper. Sooner or later, you get a whole family of these things.

Ever know a girl with just one Barbie doll? Me neither. Same thing with guys and AR's.
8/7/2012 6:14:28 PM EDT
[#4]
My 5.56 barrel is a Green Mountain 1in8 twist.  It does best with 52 and 53 grain flat based match bullets.  If you want to shoot the heavier 69 and 77 grainers, I recommend a 1in7 twist.  Avoid carbine length gas if you can.  Midlength gas on a 16" barrel or rifle gas on an 18 or 20" barrel is the way to go, IMO. The former for a nice handy carbine, the latter for 3-gun competition or infantry duty. - CW
8/8/2012 12:02:16 AM EDT
[#5]
I have 1x7 on my two AR15s. I like to be able to shoot any weight bullet.
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