I would have to say that the scope is a little too powerful, but then again the topic of the post isn't scopes...it's bullets. I don't know all of the offerings for the 300WSM, but I do know that a wounded bear isn't something that you want to track a country mile. Your best bet is to shoot a bullet that is fairly heavy for the caliber. I would start at the 180s in the 300WSM. I would look for a good bullet like the Nosler partition, the Trophy Bonded, the Barnes X, and the Failsafe for starters. Buy a few different kinds and see which ones your rifle likes best. I don't think you could go wrong with any of those. I would even try the 20 grain bullets too. They may havea little more drop at longer ranges, but in realistic hunting situations (inside 400 yards) no 300 magnum has enough drop with any bullet to really make much of a difference between the 180s and the 200s, and I would feel better with 20 more grains of bullet weight. As a side note, I would reconsider the scope. The 10-40 is OK for varmint hunting, or even antelope hunting, but I've never heard of a hunter taking a shot at a black bear from 400 yards away on an open prairie. I think that you would be better served by something a little more practical.