It was hot and windy, but interesting shooting the lighter of the two AR-10's.
This is the range:
The rifle is an AR-10. It's wearing a Leupold Mark 6 - 1x6 power , in a LaRue 1.5 mount. The barrel is an 18" mid-length Rainier Arms Ultramatch (Shilen blank) with a Vortex flash hider. The load was a 150gr Nosler BT in Nosler brass, over 46gr of Varget, sparked by CCI BR2 primers. Timney 4lb single stage trigger, and magpul ACS stock.
The wind was gusty. With it being hot I was shooting 5 shots, and letting the barrel cool off. On the 2nd group, I'd fired 5, then sat down again, and fired the one flyer, and realized the wind had quit. I adjusted hold, and it held quite a bit better. 9 of 10 were in 1.28"
So, one group at 1.71" and another in 1.85". A better shooter, one better at reading the wind, might cut that average by 1/2". A higher mag scope might help too.
But this one I call a heavy carbine, not really a bench gun