It gets me when the guy or hero is looking for the deadly killers and is very tactical going up the stairs with those quick swing-the-shotgun motions, he approaches a door very tactically, with those quick shotgun handling motions and everything is all done with great tension and trepidation, maybe another door, or the attack door above, and then for the next door he chambers a shell...........and you groan because he has been doing all this facing instant death drama without a shell chambered.
It is even worse than when they chamber a round and go stalking, and then redo the chambering every time they need dramatic emphasis, although no shoooting has been done.
‘attack door’ was meant to be an attic door.