Holy cow........ lapua....seperation? I hate to pry but do you have the problem identified and corrected?
I haven't figured out if there is an issue with the rifle. Headspace was OK. I think I may have just pushed too many loads on the brass. It went at 5 reloads. I'm not shooting near max. I have to take the rifle to a smith, can't get the case out.
"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt
Sized my brass .002" under fired brass. Bit it is steely all headed for the same ending if I continue shooting. The separation took place on the fifth reload. Maybe that all I can expect.
My 338 LM (Lapua Head stamp) Brass was at 15 firings when I sold the rifle. Still going as far as I know. At 10 firings I checked the area above the web for thickness and it was fine in the 10 so I checked so I kept on running it.
If Lapua brass is going away in 5 firings there is something wrong in my mind.