I did not measure the groups, but a quick eyeing of it looks to be within 1/2 MOA and the penny is there for size reference.
For handloads, which were used on the second outing in the photos posted:
Black Hills brass, set the shoulder back 0.0015" 175 SMK 43.5 Varget F210 COAL 2.810" Works well in every 308 I've tried it and it is what I use for hunting. Never tried any other loads for the 308 as this one is very reliable and five different rifles all have liked it.
I am out for several days, but will post some photos of the bolt and shroud to respond to the gas question. Don't know about the bolt handle. It appears to be solid, but I will ask and report back.
Glad eveyone found it helpful. The rifle runs so nicely out of the box, it is a real joy. I'll post a progress report after it has more rounds through it.