Went back out over the weekend and tried Lapua Brass, CCI magnum primers with 45.5 of H4350 with:
140 NPT (3.08 COL)- 2675 FPS
140 Core-Lokts (3.02 COL) 2650 FPS
Groups were very erratic, I think I have a bedding issue. I'm taking it out of the factory wooden stock and dropping it back in a McMillian and will try again this weekend.
