Tehy said that one round is self defense. Then if you wait and he keeps coming at you you can fire on rounds until he stops coming. I was in the Marines and always double tap when im shooting self defense. If you keep coming at me in my house after getting hit with 2 rounds of 3.5in no4 Turkey loads at 5 yards you are gonna be hurting because there is 3 rounds of 3.5in 00 Buck behind that.