Coresong

I have tried Winchester's Auto Comp with some Rainier 230 gr RN at 6.0 , 6.4 and 6.6 gr in my Nighthawk Enforcer. All ran very well, but looking at the primers would lead me think 6.4 and especially 6.6 are pushing the pressures a bit. I likely should have started at 5.4 , 5.7 and 6.0. Going to run some small batches up, and chron the whole range.