If the actor who is in control of the gun is too ignorant to be able to check to see if it’s loaded and what it’s loaded with, they shouldn’t be allowed to handle the gun. I would think that the last line of defense would be the actor checking the load before he pretends to be a hero.
How many people on this forum would take a gun that someone handed them, accept their word that it’s not loaded and start pointing it around. I don’t see it as acceptable, whoever pulls the trigger owns a majority of the responsibility.