I was using a little retumbo from a friend to see if my gun liked it, and it did so i ordered a keg of it. I know that there are differences in lots but I had to back down from 56.6g of my friends lot of retumbo to 54.5 of my retumbo. Is that a lot or is it normal
Re: pressure difference from lot to lot of retumbo
that is with all the same primers, seating depth, case lenght haven't change a thing. 55g is still showing ejector button marks. Any thoughts? I am shooting at 1000-1200 feet higher elevation than when I was using my friends powder.