270 all the way. It's all on paper. I very seldom shoot past 150 yards at deer. I simply don't think I am that good. Shooting from a rested sandbag is one thing and shooting from a tree limb is another. Try shooting the two different rounds. The270 WSM is here to stay as well as the 300WSM.The 270WSMseems close to theregular 7mm mag though.