I think it has more to do with how much time you spend thinking about and studying guns and gun related stuff than with the actual number you own. I've been a gun nut ever since I can remember, my dad was fresh out of the Marines when I was little, and I had the most awesome arsenal of toy guns you can imagine. He had a Beretta Minx he'd let me handle, it seemed big way back then. My Grandma would take me to the little shooting gallery that used to be here, starting at about age six, and I'd get to shoot real rifles, Browning Autos with a gallery load. When I was nine, we moved to SE Alaska, that's when I started shooting seriously. I read everything gun related I could get my hands on, and writers like Elmer Keith, Jeff Cooper, Col. Charles Askins, and Jack O'Conner were my favorites. I bought my first rifle from a neighbor when I was eleven, it was a 7.65 Argentine Mauser. I paid 30 bucks for it, and killed my first two deer with it. I've never NOT been a "gun nut".