Originally Posted by WhelanLad
GD... 350 rem mag possibility on the 300WSM??? whats needed?
A new barrel is needed. Before proceeding, I would try some 350 ammo in your WSM magazine to see if it will work. Browning magazines are often not all that tolerant. I'm not sure how willing Browning is to sell a bolt head but if they are, it would be possible to change the head and magazine and build the rifle in any 308-based cartridge as well. GD