RE: I have to get a new rifle
7mm Mag.
Sounds like you know what you want already. I really like what the .270WSM has to offer, but I tried to price the ammo compared to .270 Win. Problem I came across was FINDING WSM ammo. Right now, not everyone loads WSMs.
From what I' ve seen, the 7mag and .270WSM are comparable in performance, but if you are ever in B.F.E. and need ammo, any Wal-Mart or sporting goods retail store will have 7Mag rounds. Same can' t be said for the WSMs.