Tested 2 rifles today. Both were assembled by me. First one has a PSA 20" 1:9 barrel. Second has a Columbia River Arms 22" 1:9 barrel.

PSA did good with 45 grains CFE 223 with a 139 Hornady soft tip. 8208 XBR did well with 39.7 grains behind a Nosler 140 grain BT. Groups were .44 and .47 with the PSA. I wasn't expecting that good of a group. Both velocities were about 2875

Second rifle did good with 40.5 H4895 with a 140 Nosler BT. Group measured .159. The thing that kind of disappointed me was that the velocity out of the 22" barrel was only around 2850 fps. I was getting that with my 20" barrel using the other loads this rifle didn't like. Given that this barrel did more than twice as good as the PSA barrel; I may buy another and unload the PSA. I need to play around with those powders for a bit.






Just to prove it was an AR...

Good shooting with both barrels. AR's often shoot very well.

I'm waiting for the hecklers.

Maybe they’ll be nicer this time.

Thanks sir. Never had shot either of the brands of barrels before, so I was a little nervous of the results. 22” doesn’t seem long at all for this platform.

Another thing to note for those interested is that between the Midwest Industries and Surefire brake; the MI felt like it reduced recoil more.

I wouldn’t be complaining or changing anything!!

20" @ 2875 seems kinda warm. How did the brass look?

Didn’t look to have anything wrong with it.

Rock on! Groups are fantabulous.

I thought groups were supposed to be measured from center of hole to center of hole, not outside to outside?

They are. .439 - .280 = .159