Again, I’d like to point out that you should keep a pair of electronic earmuffs by your home defense shotgun. No matter what ammo you shoot – God forbid – the resulting sonic assault will defeat you. Both immediately – reducing your ability to hear other threats and communicate with friendlies – and long term – degrading your hearing and, perhaps, giving you life-long tinnitus. As for ammo, I use double-ought buck. While over-penetration is an issue, I’m willing to take that risk to assure the immediate end of hostiles. Provided I don’t miss. What do you carry in your hd shotgun?