Whenever I consider a new gun one of the main points I consider is the caliber, not because I like certain calibers but more because I'm already invested in certain calibers. How diverse is your collection? I am trying to keep mine to a minimum. Edit: How many calibers do you OWN not how many can your guns shoot. Owning a Medusa doesn't mean you have 25 calibers if you only stock .357's .22, .40, .45, .223, .308, 30-06, 12 gauge.