Can someone more informed, (or with more time or better search skills) explain to me the technical or legal difference between a "shotgun" and a "rifle"? It seems I once had a satisfactory explanation, but to every "characteristic" or "function " of one of them, I can apply it to the other. For example, I can shoot slugs from a rifled barrel in my gas operated, semi-automatic shotgun, and I can fire "shotshells" from my 10-22 (or my 1911, for what its worth) I can fire 410 shotshells from my revolver... And I'm sure with enough rounds through it,my .223WSSM will have a smoothbore. I'd really appreciate any FACTS or DEFINITIONS