Gun-store clerks get all kinds of questions from customers. I visited several stores in Asheville, North Carolina, to throw them a curve and see how they handled it. I asked if they had a general-purpose shotgun, one I could use for bird hunting, clays, and maybe even home defense. There really is no one such animal on the market: If you want a home-defense gun, you’ll want a short, maneuverable barrel with an open choke. Bird and clay shooters, however, want a longer barrel and a tighter choke. Some of the clerks in this Appalachian enclave were perplexed, others unfazed.