I have had the same issues with a few newer Remington's. Everyone of them had the same issue, the firing pin spring dragging on the inside of the bolt. Replaced them all with the PTG 20% stronger spring and firing pin. I think the firing pin is made by GreTan. Groups shrink like Magic, no variation in firing pin speed. I bought a 5R 308 wouldn't shoot better than 1.25" at 100 yards, swapped out firing pin assembly and " BAM " one hole groups.
TEXMAG
