Went to CMP range today-- very, very nice

[Hayata]

I'm not going to win any awards, but this is about a 12" group at 600, with an AR.
View attachment 877969

I found out too late that it could give me the group size. But roughly 12".

What barrel and ammo were you using?

 

[freedom]

Remove the bench and the scope and you'll be thankful for that giant dot.

 

[kuduman]

What barrel and ammo were you using?

Rock River 20" heavy barrel. My handloads; from memory 23.3 gr. XBR-8208 with Sierra 77 gr. SMKs. Lake City brass. Match primers.

It is a real 10-shot group, not a gun magazine 3-shot group. : )

I got about 16" with Black Hills OTM 77, commercial. My loads usually out shoot it, but not dramatically. When I don't have time to load, I use it. It is 100-150 fps faster, FWIW. From my 20" barrel.

 

[kuduman]

Remove the bench and the scope and you'll be thankful for that giant dot.

I have no doubt sir.

 

[kuduman]

For whatever it's worth, here's Black Hills OTM 77, from a 16" PSA upper (Wylde chamber and hand-lapped at the factory though). Only five shots, though with a creepy gritty trigger and a cheap scope. Basically a "parts gun" I threw together. 600 yards again. About 17".