A low recoil (and though you don't mention it, light and handy) rifle is worth pursuing, but don't expect any performance miracles on game; with good bullets and good shooting, you'll be fine with almost anything (although less recoil may make you a better shot).
If you decide to go ahead with your notion, I'd suggest the 6.5 Creedmoor as well, for the better selection of available rifles and ammo as much as anything. .260s are a bit scarce and the ballistics are practically identical.
