I have "chased" after many guns over the years - usually selling and buying on a regular basis to find those weapons that fit me the best. I was pondering the ideal number of calibers that one should own - to cut costs, improve efficiency of use and not be duplicative by having very similar caliber sized guns. So I decided to try a 3 caliber approach - 22lr, 9mm, and .308 - selling off my other calibered guns. I know it is fun to have lots of choices, but realistically, what would you consider the ideal caliber types to own?