Re: 6.5 WSM owners please help
My dad owns one. Win 270 WSM brass is what he uses. He necks them down in a Redding 270 WSM FL bushing die.
The 7mm WSM case is .030-.040" longer than the others, in case you din't know already.
Cases hold up well. The Norma brass in 300 WSM is soft, as I've heard all over the place lately.