I see Red Hawk is willing to take on large California cats with his bow, so maybe I should scale down on what to use on a bison. :-)

Well, maybe not. Walmart can special order a Ruger #1 in 375 for about $675. (Anybody tried that?) I'm not too worried about a fast 2nd shot. When I was a kid, my very 1st rifle was a single. I just kept another bullet pursed in my mouth for another shot, at least if it was a bit above zero. Not as fast as a mauser..... but not bad!