7mm RM is my very favorite deer caliber it gets the job done without much thinking out to 350 yards and in the hands of an experienced shooter much farther is possible. I'm biased hunting pretty much all in the West (I can see the Pacific ocean from 2 of my hunting spots on a clear day) so long shots are certainly possible but our deer aren't very large either so a 6.5 or 270 would work about as well. On the other hand if you shoot the rifle ?well who cares if you shoot your deer with a 375H&H.
The RAR seems to handle full boat 180 grain 30-06 loads without too much recoil so the 7 mag shouldn't be too bad to shoot and since I already have the brass & dies that saves time and money. But it wouldn't really be that tempting to replace my old model 77 Ruger, might be nice for a grandson or nephew though.
