I am planning a stay in Alaska next year for 6 months to a year. I want to do a lot of backpacking, snowshoeing, and some archery while I am there. I have been shopping for a handgun to carry with me. I get very mixed stories on what I need. Do I need the new S&W 500 or will a 45 do? I would not be able to use the 500 again which would be a drawback because I would never really need that gun. Any help would be appreciated.