The AR is America’s rifle but the shotgun remains America’s go-to home defense firearm. And why not? If there is such a thing as a one-shot man-stopper, the 12-gauge shotgun is it. While the Remington 870 and Mossberg 500 continue to dominate the home defense shotgun market, today’s buyers can choose from a wide range of scatterguns, from inexpensive Turkish smooth-bores to high-end Benellis and magazine-fed Russian guns. So what’s your home defense shotgun? What caliber and which ammo do you load? If you don’t rock a shotgun to protect home and hearth, what gun do you run and why not a shotgun?