Had a cop tell me that the best home defense firearm is not a pistol but a 12 ga pump shotgun with the barrel shortened to the minimum legal length and filled with double-ought buckshot. Easier to aim in the dark, harder for someone to turn around on you and one shot almost anywhere on the body is ah, disabling, at a minimum. Also, the lower muzzle velocity of the buckshot means that it less likely to pass through exterior walls.