RE: 300 WSM Vs 7mm Rem Mag Which is better for big game
I'd pick the 300WSM simply because it is a beltless case but that is just a personal thing with me.
Speaking in terms of in flight ballistics and terminal performance....... Neither you nor the dead deer, elk, moose, bear, or other animal will ever know the difference. So just do as Shato said and flip a coin.