I tried R-25, and H1000. allthough I do think R-25 can be a potentail shooter in my gun, I was short on time so I ran with the H1000. I think 71-72 grains, but I am not 100% sure!
I also am working with H1000 in the .257Wby Mag with the 115gr NBT. My gun starts to show pressure at 73gr with bullets jammed in lands. My working load is 71-71.5 right now as I finish up ladders.
