You forgot one scenario - they put a live round in the chamber instead of a blank.
https://nypost.com/2021/10/22/prop-gun-used-by-alec-baldwin-in-shooting-contained-live-round-union/
What is a live round doing on or around any production set ever.
How did the gun get into Aaric Bawrin’s hand?
Was it his?
Most importantly though, why did he point it at the cinematographer and pull the trigger.
Hard to get around this one.
It’s all on film for now... look for that to go missing.
I went to an amusement in which there was a staged gunfight. Some of the “cowboys” were walking around in the audience armed. A quick glance from me at their guns showed them to be black powder revolvers with the nipples removed.
Those participating in the gun fight were on top of buildings, very loud blanks, and a quick reload.
From where I was I noticed the empty ammo cases were black and short. I wanted to get a better look at the cases but could not get close enough.