Discussion Starter · #1 ·
There are lots of old posts about the right load for an M1A Scout 18" barrel. I had been using 43gr IMR4895 under 168gr HPBT from Hornady with Winchester LPR primers. My brass is mixed - hornady, winchester, lc (with reamed pockets), PMC. What concerns me are the flattened primers. Isn't this showing over pressurization? I worked up some other test loads and was still flattening primers down to 38gr in half grain increments. I tried a Federal 7.62 NATO round and it does NOT flatten the primer. Should I just ignore the flattened primers?