First let me welcome you aboard.
I am convinced that the Ruger Black Hawk and Super Black Hawk are the best hunting guns on the market for the money. If you want to use a scope the Ruger Super Red Hawk would be a better choice, but I would recomand you start with the Black Hawk, single action.
I live in Oh. where rifles are illegal so I hunt with handguns. I`ve got 3 -.357 mags., a .357 max., 3-.44 mags., 2-.454`s and a .500 S&W that I hunt with. The .357`s are good enough for deer , with a well placed shot, but lite on bear I would think. The .454 and .500 definately have alot more knock down power than the .44 mag., but the .44 mag. is over kill on deer and more than enough for black bear, for brown bear I want the .500, at least untill they come out with something bigger.