"This has been very interesting reading so I'll add my 2 cents, bear in mind it's worth what you pay for it:). You don't need stopping power for any North American animal except for the big bears."
I would add Dall sheep and mountain goat( or any critter that lives in steep terrain ). A sheep or goat making even a relatively short "death run" could very easily make it unrecoverable. Bang flops be a good thing with such game.
