It's been reported that cops found real ammunition on the set of Rust and that crew members had been going out and "plinking" with the gun that killed Halyna Hutchins. They had been doing it that morning and apparently left a live round in the gun.
But with these things, once people start testifying under oath, the facts often turn out to be different than what was reported in the press.
It seems crazy when you're making a low budget movie---when much of the crew walks off because they hadn't been paid in weeks and because they had to drive to Albuquerque every night because hotels there were slightly cheaper---that you'd go the more expensive route for your prop guns. They shouldn't have been using real guns. And the stunts should have been done through editing so no one could possibly get hurt.
There was the Soviet western, White Sun of the Desert, set in Kazakhstan in the 1920's. The public loved it but it got little respect from the Soviet movie industry because there were only one or two actual stunts in it. In one, a guy jumped out of second floor window and landed in some sand. I don't remember what the other one was. But the rest of it was done with montage.
We see a guy climbing a ladder. We see someone shoot at him. Then a close-up him hanging by one hand. He lets go. Then a shot of him after he landed. I think that's how one thing went.
They do that anyway now. They won't do an action scene in one shot. They were bragging about Matt Damon learning karate for a movie, but then the fight scenes were pieced together from very short takes. Like the fight scene Chris Elliott put together as a joke on David Letterman.
Why do people make things difficult?