Were I in bear country, I think I would be packing my Glock 21 in .460 Rowland or a Glock 20 in 10mm. These things happen so close and so fast that I think I could get more lead into the bear faster than with a .44 magnum revolver of any kind. Looks like 230 grain hardball would be the way to go.
Glock 40 with a red dot would be pretty nice...certainly better than a can of pepper spray and a scowl...
Good choice - for now, .357 is biggest I have but am picking up a 40 cal auto in near future - not quite as much speed/energy as .357 but does have more shots available w/o reloading ... and reloading is a tad quicker for auto magazines than with the speed-loader for a revolver...not much but a tad and putting in more extra shots quicker might be a life saver.