First of all, my brother is a fucking idiot. But he was going to do an endurance motorcycle trip from somewhere along canada, north about 800 miles into the yukon, and back... But he had a dream where he died in the woods on a motorcycle. So he's going to take the next logical step and do it on a unicycle. ~1600 miles in -25* to 10*F weather (in May). I know I can't talk him out of this and I know he'll do it (and I'm considering tagging along on a bicycle.) But I at least talked him into carrying a weapon to protect himself and hunt with. His main concern is bears, so to satisfy that, what kind of round will take a bear down? I think a .308 would do the trick, but I don't hunt so I don't know what it can do. Another thought was a shotgun. Keep it loaded with slugs for defense, and load it up with buckshot for small game. What does WMD think? Remember he's on a unicycle, so the smaller and lighter the better. Also, any other words of wisdom I can pass on.