my prefernce is the 7mm mag, i've shot 3 moose and and over a dozen deer with this recoil is very managable, i weigh 200lbs, and it's fairly flat shooting and powerfull, a high shoulder shot on a 200lbs deer will drop it in it's tracks.
also if you are unforunate enough to make a bad shot, stomach,hind quarters ect. it will still make a big enough hole to allow you to quickly recover your animal.
if reciol is managable...(you don't flinch) then bigger is always better, unless you're hunting rabbits.