Re: Lapua 22-250 Brass
Yeowza. Thats a bunch to have to expand to fill the chamber!
As much as I despise the stuff on the grounds of its gawd-awful variance in dimensions - and usually weight - I've never really had any performance or accuracy issues with Winchester brass (again, 99.9% of my experience is with .308 Win and .223 Rem). The stuff shoots disgustingly well anyways.
That said... years ago when I just started NRA HP, someone I knew had some virgin (i.e. undersized) Winchester brass rupture on him and do a number on the stock (most of the gas vented down into the mag well and blew out the bottom of the stock). Not something I ever want to experience first hand, for sure.