I made that up yesterday. Tested Federal/Lake City, Winchester, Perfecta, PMC, ZQI, MEN, and South African M1A2. Results are towards the end.
BLUF: If I was zeroing, I'd want to go with Federal/Lake City, but for a carbine class, all would get the job done. Winchester was odd though.
What's your favorite or go to 7.62 NATO ammo?