Twist rate on 16"

jeffery.boyd

Going to see "a guy" about building an AR from the ground up. He uses YHM barrels. Whats the best twist rate 1:7 or 1:9?

This will be a carbine for sporting fun, not hitting ground hogs at 500 yards. Just want to hit 1" at 250-300 yards consistant with an optic and 75-100 yards with the iron sights.

I have no specific game in mind, mostly paper and for plinking.

Rem 870 or Browning HP for home defense already, so this will just be a "fun in sun gun".

I go to this guys shop at 6 tonight for an initial order. Needs your thoughts on this ASAP.

Thanks

cccooper

1:7 for a heavier bullet. I have a 1:7 on my HBAR and shoot 69gr. bullets or heavier when I can find them. A 16" barrel on my M4gery has a 1:9 and I shoot standard 55gr. I am happy w/ 6-8 inch groups from my Bushmaster at 100yards.

jeffery.boyd

I was told that shooting the smaller weight bullets like 45-55 grain with a 1:7 twist will burn up the barrel much quicker than the heavier loads. Is this true also?

guntech59

IMO the 1/9 twist is the best option unless you are planning to shoot anything over 70-75 gr.

I have shot weights from 50gr to 69gr out of my 1/9 with no stabilization problems.

cpermd

Ever heard of the search function??

It depends purely on the length of the bullet you will shoot.

CP

proapp

Just want to hit 1" at 250-300 yards consistant with an optic

if you can do this, you could tell us too.....