I own and shoot 3 - .44 mags., 2 - .454`s and a .500 S&W. I have hunted for deer for years with the .44 and killed several with that round and it is more than you need for deer. As for bear countary, the .44 mag. is more than enough for black bear, but for browns nothing less than the .500.
When you start talking about big bore handguns and their recoil, don`t forget than when the .357 mag. came out there were alot of people saying that it had to much recoil and would never fly. there was almost no one shooting the .44 mag`s untill Dirty Harry came out, and over nite S&W could not make them fast enough. Fun though alot of them were never fired, at least by the first owner.
The main thing with and cal. is shot placement. If your not comfortablr shooting the big bores get a samller cal. that you are comfortable with.
As for the .460, it`s a great round and I will probibly own one some day when I find one real cheap, but as for the extra velosity over the .500 it`s really not there. With the .500 you can push a 275 gn. bullet to abt. the same velosity as the .460 pushes a .220 gn. bullet.
As several have already said, LOVE THOSE BIG BORES!!!!!!!!!!!!!!!!!!!!!!