Many years ago I had about 12 different calibers, 2-3 guns in those calibers and all the other stuff to go with them. Being transferred all over, it became difficult to maintain everything and military shipping was becoming a PITA. In the early 80s I decided to down size. I sold all but a couple of guns, I kept a 30/30, 12 gauge and a WWII 45 APC which ended up selling as I needed cash. After I retired I decided to get some new guns. I started to think long term as life is short term and decided to keep a lot less calibers and the rounds that have been around. I decided on 22, 30/30, 12 gauge and 40 caliber. l later added a 45/70 and 50 caliber S&W magnum. So now I buy guns in those calibers only, as they best suit my need.