Big Jake Duke
Well-Known Member
I'd go down a couple of grains and take a bit off the pressure peak.
You are probably at 75 Kpsi for it to be tough to pull back.
A couple of questions though. Are you fl sizing your brass? Has that brass been beaten up with a hot load before?
Marks on the brass head are never good and are usually consistant with at least slight over-pressure. Before you give in to sub standard accuracy play with seating depth on the highest charge that doesn't give ejector marks.
Have a good one...
He may have too hot a load, but 5/16 as a substandard group?
That's a smidge over .25! Ill take that in spades please.