21" .308 or 20" 6.5 Creedmoor?

[vmpglenn]

I've just built a .308 AR with a Noveske 21" .308 barrel. I've set it up specifically to shoot the Hornady 178gr Superformance rounds, so it has an Armalite rifle-length gas system, heavy buffer, and Tubbs flat-wire action spring.

I have the option of swapping in a Noveske 20" 6.5 Creedmoor barrel.

I don't plan to hunt with this rifle, but I'd like to punch paper out to 1200 yards (the max distance at my gun club).

Should I stick with the 21" .308 barrel, or go with the 20" Creedmoor barrel?

I know I can get better performance by going with an even longer barrel, but those two Noveskes are the options I'd appreciate limiting the discussion to.

Thank you very much.

 

[fastford]

Re: 21" .308 or 20" 6.5 Creedmoor?

both!

 

[jasonk]

Re: 21" .308 or 20" 6.5 Creedmoor?

6.5 will beat the .308 everytime once the breeze picks up.

 

[leadbullet]

Re: 21" .308 or 20" 6.5 Creedmoor?

I would built another complete upper for the creedmoor I did and doesn't regret it one bit.

 

[desertHK]

Re: 21" .308 or 20" 6.5 Creedmoor?

1200 yards may be a bit too much for the 308 to hit consistently.

 

[81sfo]

Re: 21" .308 or 20" 6.5 Creedmoor?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DesertHK</div><div class="ubbcode-body">1200 yards may be a bit too much for the 308 to hit consistently.</div></div>
Yep he would need to shoot 155 scenars and being a gas gun , velocity will be less than needed to get them to shoot good to 1200. Stick to the 6.5 and cross your fingers.

 

[Goose375]

Re: 21" .308 or 20" 6.5 Creedmoor?

6.5... go with it, Why not right? better ballistics...

 

[vmpglenn]

Re: 21" .308 or 20" 6.5 Creedmoor?

You guys are spot on - better ballistics for 6.5, even out of the 20" barrel. I have the Noveske 6.5 barrel on the way.

Thank you.

 

[jasonk]

Re: 21" .308 or 20" 6.5 Creedmoor?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vmpgsc</div><div class="ubbcode-body">You guys are spot on - better ballistics for 6.5, even out of the 20" barrel. I have the Noveske 6.5 barrel on the way.</div></div>

We never doubted ourselves for a second

Looking forward to seeing the 6.5 range report.