Ive had this happen MULTIPLE times where I know an enemy is hiding behind a piece of furniture, maybe a dresser or a couch, and I will just pump numerous bullets through the thing they are hiding behind and it always seems to do absolutely nothing. I have literally never been able to get a kill in this way, which makes me think it removes 90% of the damage your bullets do, or its legitimately impossible to damage people through certain objects.

For example im playing on the attacker side on Kafe Dostoyevsky. Im playing as Dokkaebi, and have already droned out an enemy in the reading room that doesnt realize. I know hes sitting behind the bookcase/cabinet that has fallen over on its side, and I use my phonecall to make him stationary behind the thing. I pump 7-8 bullets into exactly where he is and he simply pops his head up and immediately kills me.