I like both and what one can do so can the other. On elk and moose the 7RM seems like a step up over the 270, for deer not much advantage for the 7RM. The 300WM seems like a step up once you go to bullets heavier than 180 grains, whether this is significant or psychological is hard to say. If big bears are about the 300WM would get the nod although I have carried a 7RM as a fishing gun when the big brownies were thick.

I can shoot more with the 7RM than with the 300WM which has just enough more recoil to be noticeable. A Tikka T3 light was uncomfortable for me even in 300 WSM which is supposed to have less recoil than the 300WM. Les Bowen wrote numerous times he hated to see the dudes show up at elk camp with a brand new 300 magnum because they usually didn't shoot them well. He would much prefer they bring a well broken in 270 or 30-06.

Flip a coin or go for which rifle that feels the best.