Oh wow, I've always dreamed about building my own home with a nice gun vault like that. Sounds pretty amazing.
Yeah, a bear or mt lion wouldn't be intimidated by the size of any rifle, pistol, knife etc. So that would be a pretty good use for a gun like that. Have you ever shot a .45 that small before? I never have, but man can I imagine the wrist flick from a .45/410 round.