I'm running 6CM brass, but I'm expecting the barrel to speed up in the first 200 rounds. So just wanting a modest load to uniform my brass, get some rounds down the tube and do some practice before I do load development for my match projectiles.
This chamber is a pretty good match for Lapua brass through, only 0.003 difference between the two. But I've seen improved SD/ES after I've fired the brass once, then resized and done load development from there.
Bookmarks