I too have shot a variety of firearms indoors both with and without ear protection and so far my hearing is (although no longer perfect) still decent. There is a world of difference between shooting a 223 in a large room and shooting a 12ga in a closet. Or for that matter shooting a 12ga in a large room or in a closet. I'm not disputing what you say by any means, however, I fear that the statement may be a little too vauge to ensure safety in any give home defense situation. I just want to be sure our new friend has all the information he needs to keep his family safe and healthy especially if there are small children in the house. Their ears are far more sensative than ours if my understand of anatomy is correct (and please correct me if it's not).