Inside a house, probably OK. Amazes me that most seem to think that only 00buck or something larger will kill someone. They talk about HD guns but don't seem to understand that you are very unlikely to be shooting outside average room distance. Shooting at someone outside your home and calling it HD can get very shaky in court. Inside a room it doesn't matter what you shoot in a shotgun, the shot charge will still be inside the cup and will blow a heck of a hole in someone. Doesn't matter if it's birdshot or not. Even the lowly .410 at ordinary room distance has an impact comparable to a .44Mag when the shot hasn't had chance to spread. Try shooting a watermelon at 10 or 12 feet. Amazing! Too much BS from internet experts. GW