.410 bore, commonly incorrectly named the .410 gauge, is the smallest gauge of shotgun shell commonly available. It has similar base dimensions to the .45 Colt revolver cartridge, allowing many single-shot firearms and some revolvers chambered in that caliber to fire shot without any modifications, though the .410 is significantly longer, up to 3 inches (76 mm). This round has become popular with defensive guns like Bond Arms derringers, Taurus Judge, and S&W Governor.
Hornady Critical Defense .410 Bore 1 Slug, 2 RD Ball FTX Centerfire Shotgun Slug Ammunition (Box of 20 Rounds)
Units in Stock - 58