I run usually 300, so on 2firings I’m at 600rds on barrel, and most of those rounds were in a match. This year I’ve been doing good so it never held me back. Now I have 11x on that same brass on 2nd barrel and I still trust the brass. I’ve seen to many issues with other brands of brass that I’ll stick with Lapua. On my first dasher I ran a junk barrel to fireform to avoid barrel burn. That was a waste, best idea I’ve had is run the stuff in matches and prepare for it. Since day 1 I’ve run 31.7gr of varget with 105jlk’s going 2960ish, never wasted 200rds doing load work up or another 300 just forming. I’ve spent it in matches or on the range learning my dope.