My suspicion would be that the brass is being full length sized and the die is not properly adjusted pushing the shoulder back too much thus creating excess headspace in the cartridge. I would try backing out the FL sizing die a quarter turn or so and seeing if that helped.
Yes the brass is full length sized - i set the die as per RCBS instructions but will back it out 1/4 turn and see what happens - thanks
I had the same super hot brass in my 7600. For those who haven't experienced it, they were hot like I've never seen out of any bolt gun. I still don't understand why. I was trying to get 225g Sierra's to shoot using Varget. I've really struggled to find any loads that shoot well. I'd be content to find a load that shot into 2." I'm going to give 4064 a try this summer. If that fails, I'll send the rifled down the road.
I shot 5 rounds today of varying powder charges and 3 holes were touching and 1/2 inch under that 2 holes were touching. this was at 50 yds
RL 15 with hornady 250 gr round nose
