I'm not surprised by most of the responses. I am surprised no one has said;
ne caliber? Are you crazy?
This IS a place where gun folk hang out. I would venture that a lot of citizens who own guns might have that one 38spe they bought for home protection, or a 9mm, etc etc.
Even though I have only 3 calibers and my wife has 3 we'd be hard pressed to get to 1. Two, ok one.......
Oh, I did forget my dad's Marlin model 336A in 30/30 that he bought in the late 1950s. Ok, I've got 4 calibers. Haven't shot that in 30 years.
Fun topic to hear what people have/prefer
Dave