[A Navy Vet]

"Wouldn’t you have to pull the hammer back until it hits a ‘click’ that holds the hammer back? Then you’d aim and pull the trigger. If his finger slipped before it fully cocked it could happen."

Yes, and I've also read where the trigger sear can get worn after use even if the "click" happens at half-cocked. Near as I can tell, Baldwin didn't get to the first (half-cocked) sear and it either slipped out of his thumb from sweat/oil and the hammer firing pin hit the bullet primer.

This is all on the armorer. However, if Baldwin did fire others according to the crew and brought in a novice armorer, he probably has some liability.

[cyclotic]

That’s my thought too. He’ll walk on the killing but will get nailed on the negligence as producer.