Source for 1:7 20-24" AR barrels

[nortac]

There are plenty of 1:8 barrels out there, but who sells a 1:7 20-24" Barrel? Is there any downside to a 1:7 vs a 1:8 as long as you"re shooting 69gr. or heavier?

 

[Ritten]

Best of the best...

www.whiteoakarmament.com and www.whiteoakprecision.com

As long as you're shooting 69gr. and heavier or thick jackets.....no downside.

 

[nortac]

Yeah, I saw the SDM. I guess I should have specified > 20". I really like the DPMS 24" fluted barrel, but it is only available in 1:8 AFAIK. How much performance advantage, if any, is there in a longer than 20" barrel for 600 yd or greater competition?

 

[dzelenka]

Yeah, I saw the SDM. I guess I should have specified > 20". I really like the DPMS 24" fluted barrel, but it is only available in 1:8 AFAIK. How much performance advantage, if any, is there in a longer than 20" barrel for 600 yd or greater competition?

That is a more complex question thatn it would seem at first glance. Are you using a scope or iron sights. Single loaded bullets or mag length? 600 yards or more? If more, how much? An iron sighted 20" barrel is perfectly capable of sending a bullet 600 yards with excellent accuracy. If you were to use a 24" barrel with iron sights, the longer sighting plane offers aiming advntage. The longer barrel also offers some velocity advantage, butI don't think it is that much (100 - 150 fps). If you are using a scope, barrel quality is more important than the 4" difference in length. If you go beyond 600 yards very much, the extravelocity will likely begin to make more of a difference. You would need to run it on a ballistic calculator.

What are you looking to do with the rifle? While I prefer a 1:7", a 1:8" may suit your purpose just as well. You could order a Kreiger or Pac-Nor from White Oak in any twist you like.

 

[nortac]

Thanks Dan, for now, just shooting at Palo Alto, both mag length and single loaded, with a scope.