Thumper: Welcome to the world of the WSM and the M70.I had the same condition you did in more than one(2,3,4?)M70 rifles chambered for the WSM.Here are my solutions:
1)Sell it.
2)Rebarrel it by someone who knows what they are doing and get a properly cut chamber.
3)Buy a Kimber (I never had the problem with a Kimber,)and hope it shoots.
4)If #1-3 are not viable options, sell it!!!!!!And buy a 300 Win Mag.
