I am thinking it could be a headspace issue, it is an old Savage and from the looks of the barrel nut, someone removed it for some reason. It also looks like they put the recoil lug in a vice when they did it. They also started to inlet the stock for bedding, then never finished. The rifle groups well, there is also some cratering in the primer. It does this with every load from the suggested starting load up, I have not tried a max load with H335, with BLC(2) the max load is less than 40,000 C.U.P. so I'm not worried about that. Factory Remington ammo no problem, it has a much shorter OAL than recommended by the reloading manuals I own. 2.085" vs 2.125" should I shorten my OAL with a lighter load to see if it makes a difference? Oh and the primers are backing out about .0075"