I've found that the bolt on my .308 is showing gas cutting at the primer ring.
The load is only 41grns AR2206 CCI PRIMERS cases are ex Aus Mill. and Primers are a tight fit when reloading.
Projectile is 168 grn. Match at 2600ft per sec. I am not sure but it seems to have started when I dropped the load from 43grns.
I was useing Lake City 175 grn 1972 Match/Sniper ammo. I put about 1000 of these through it with no trouble.
THANKS GUYS
RACHAEL