The argument between which firearm is best for home defense is almost as old as the 9mm vs. .45 ACP debate. However, we are still debating it because neither camp has conceded. The primary argument against the shotgun is a longer length leading to less maneuverability. On the other hand, the pistol offers better maneuverability, but lacks the stopping power of a shotgun and you may be giving up some accuracy according to the critics.
In this video, sponsored by the National Shooting Sports Foundation, Clint Smith, president and director of the Thunder Ranch training center, talks about why the comparative length of a handgun—when used properly—is insignificant to that of a shotgun and that length alone should not be a deterrent when choosing a firearm for home defense.