I've probably got about 2000 rounds through a Barret and you are right that it is hard to test scope tracking when you rifle shoots about 3 MOA.
I never had any issues with an M3a either. A M3LR cost my partner and I a couple of places at the FT Benning Sniper match when it took a dump.
Buddy of mine did the 5th Grp Level 2 course when he was in the 101st.
Regular Army snipers shoot a lot more then they used to at least here on Carson.

Last edited by dodgefan; 03/10/13.