the day will come when I will be able to afford a Ruger #1 Tropical. It will be used mainly in Canada, with a very low likelyhood of me taking it to Africa, but that would be good to.

Just wondering what the most versatile calibre would be for me? I would use it for Bison, elk, moose, bear hunting/camp protection.

Last I saw it comes in the 405 Win, 375 H&H, the 2 big 416's, and the 458 WM.