Perhaps an old topic, but I think that it's one that is worth revisiting. Putting aside the argument for a defense shotgun or rifle, for those who consider using a pistol/revolver for home/personal defense what would be a logical defense round? Feel free to discuss caliber, but I don't want a 9mm vs .45 fight. I'm looking for arguments on FMJ or HP/SP. While HP will expand as everyone knows, it can also get caught up in clothing and reduce penetration. Slashed up skin is painful but non-lethal, whereas a FMJ won't expand but it will cause deeper damage. - Consider that FMJ is cheaper and one could also practice with it more. - Also, consider situations, is FMJ better in the home, but not in a carry gun? I would consider FMJ as usable a defense round as HP. In a pinch I'd use either. But for low calibers, I'd say FMJ, if the round is more powerful like .45 maybe HP would be able to penetrate deep enough. and go!