I'd like to pose a question to you my fellow GTers. If for whatever reason, you had to choose a single caliber to shoot for the remainder of your life, what would that be? it must be your carry caliber, hunting if you choose to hunt, HD caliber, and SHTF caliber if it comes up. Currently existing guns only. You must use currently existing weapons, so no 50bmg revolvers or the like. My personal choice. Well if you follow my posts you already know my answer. .357 Magnum. It's available in various sized handguns from pocket pistols, to large frame revolvers, and it starts to do interesting things as barrels get longer. Out of a 16" barrel carbine, it starts to achieve rifle speeds. With a large case capacity allowing for a variety of loads, it can do anything from mouse farts to heavy hunting loads. About the only downside is that there aren't any options for semi auto carbines, leaving it restricted to revolvers, a couple of semi auto handguns, and leverguns, but really it's hard to beat for overall utility. I suppose the .44 magnum could be argued on the high power end, but it doesn't have nearly as many concealable options. So that said, what's your choice? Go for a wide range of uses? Portability? Just indulge in the fantasy for a moment and think up what you'd use.