View Full Version : AR barrel length and coyote hunting question

04-30-2010, 1:19 PM
I'm putting together my first AR and would like to use it for a little coyote hunting as well as just punching paper at the range. Realistically, it will punch more paper than coyotes so I am looking at regular AR uppers vs. a varmint upper. I'm new to hunting and probably looking to shoot out to at most 400 yards. Most likely using 55gr. v-max ammo. Would like to keep the setup lightweight so will a 16in. barrel with 1:7 twist do the job? Or something longer?

04-30-2010, 1:48 PM
out to 400 yards, the 16 is good enough, but 20" might better suit your needs. Dont want to go 24" as its tooooo long. I have one but it only saw yote hunting once. too long, too heavy.

04-30-2010, 2:21 PM
A 16-inch barrel should do both jobs. I hova one and it is very accurate at punching paper at the range.

04-30-2010, 2:42 PM
A 1:7 twist is a little fast for 55 grain bullets. My friend shoots a 1:9 with 55 grain v-max ammo. He says it will spin most bullets up to around 75 grains.

04-30-2010, 2:50 PM
16" 1in 9 for 55ers. I use a 16" with 77grns or 75 in a 1in7.

04-30-2010, 2:52 PM
I have a 20in with 1:8 twist, shoots great, not too heavy, ive shot 45 to 69 gr bullets all with good accuracy, plus it will give a lil more velocity.

04-30-2010, 3:51 PM
16 will do it, but like others have said i would go with 1:9 twist. If it were me, I would go with a 18", but I just like those so im biased. with the 18" you get some nice little benefits that will help with accuracy, though it will be a little heavier.

04-30-2010, 4:36 PM
Thanks for all the input, I was looking at the 1:7 mostly because it gives me a little more versatility in what ammo I can shoot. Just how much accuracy am I giving up in side 400 yards if I go with the 55gr. in a 1:7?

04-30-2010, 5:40 PM
I have a Stag super varminter.24 inch is heavy i wish i would of took a different route.

04-30-2010, 6:35 PM
Most .223 ammo comes between 40 and 77 grains. So how is a gun made to shoot 80+ grain bullets the most versatile? If you had said " I hand load and want to build a .223 with a 1:7 twist rate to shoot 90 grain berger vlds in 600 or 1000 yard competitive matches." Then I would have agreed with your choice.

"I have yet to work with a barrel with a rifling twist rate quicker than 1:8 inches, but those who have tell me that while the occasional rifle will shoot 80-grain bullets quite accurately, most rifles prefer 90-grain bullets only and will seldom deliver acceptable accuracy with anything lighter. A twist rate of 1:8 inches is the best compromise for those who wish to shoot reasonably light and reasonably heavy bullets in the .223 Remington, and it is what I prefer for all-around use." By Layne Simpson