Originally Posted by
TMS951
Personally for hearing reasons heavy 9mm ammo is the best for indoors HD. Longer the barrel the better. Obviously for dropping some one fast 5.56 is ideal, but there are other tactical considerations. Lets say you have a wife and kid, you've dropped the intruder. You don't know if there are more but you want to evacuate your family. Communication is going to be key here as you gather, extract and cover your family. I'd rather do it after clapping of some 9mm, not a 5.56. Personally I have a Glock 34 with a surefire x300 and 147gr. GD ammo, good HD ammo is also low flash.
Silencers are ideal, but not available in all states.
ETA: I have never shot a rifle inside with out ear pro. I have shot inside, and inside cars with a rifle and ear pro plenty though. I have shot a 9mm inside with not earpro, it was 'stunningly' loud and certainly left your ears badly ringing. I still had decent hearing after though, despite the ringing. Outside of saving my life I would not ever want to shoot a rifle inside without ear pro.