Re: 300 RUM & 230gr Berger Hybrids
I was shooting 93 grains of H1000 in Remington brass under 230 grain Berger hybrids with excellent accuracy. But I started having problems with extraction after the second loading, even though the cases were trimmed to uniform length. I surmised that after a couple firings at that pressure level, the brass was becoming work hardened and not retracting from the chamber walls. I slowly backed down to 89.5 grains, which is where the extraction problems subsided. I'm getting 3030 fps out of a 28" Bartlein with that load, and have been hitting consistently at slightly over 1400 yards, which is the limit of my rangefinder. I do miss the 3170 that I was getting from the 93 grain load, but 3030 isn't bad either, and I don't miss the extraction problems one bit.