bcla
On our rugged Eastern foothills.....
- Joined
- Nov 28, 2012
If you believe that your gun can fire without pulling the trigger, all the more reason to not point your loaded gun at the chest of an innocent co-worker.
Do you have any idea how a 19th century single-action revolver design works?
Again - it was a movie set and he was specifically told it wasn't loaded, and the absoute first rule of guns on a movie set is that real ammo doesn't get anywhere near the set. Good luck when it's something like a large war movie set where there are dozens to hundreds of extras with firearms.
But absolutely some guns have been known to fire without a trigger pull. Even modern ones that theoretically have firing pin blocks. There's a ton of discussion about how that's happened with the Sig Sauer P320, which a lot of police agencies were using. Some have tested it and believe that drops at certain angles can cause the trigger to move due to inertia of the trigger. That's pretty unique issue though. But it's really not that hard given how some older firearms were designed where the firing pin and hammer were never blocked. The Colt Single Action Army even had the firing pin mounted right in the hammer.
Something simply has to strike the primer with enough force to start the explosion. A hammer can be cocked and ready to fire. I noted that cocked in the holster was pretty common for quick-drawing even though it can be pretty dangerous - especially when dropped.
I've been reading about how these older single-action revolvers were carried. Some would actually carry them with one empty chamber so that there was no chance of the firing pin hitting the primer without advancing the cylinder (via pulling on the hammer) first. So having it go off inadvertently was somewhat common if loaded with a live round in front of the hammer. Especially riding a horse or doing anything that might cause a shock to the hammer, even if it was down.
https://www.technology.org/2019/05/05/why-cowboys-only-loaded-5-rounds-in-their-6-chamber-revolvers/
The problem is that back in the day revolvers had pretty simple trigger mechanisms. They were so-called single action – you had to **** the hammer and then you could pull the trigger. This is why in old movies you see cowboys using one hand to **** the gun and another one to aim and shoot. The striking pin in these revolvers was integrated with the hammer. It was a good and simple design, but it did have a pretty dangerous flaw.
Of course, safety mechanisms were not really there yet. This means that a hammer in its resting position was actually resting with the striking pin right on the cartridge. There is no other way of saying it – a little bump on the hammer could cause an unwanted shot. And there were many opportunities for such bumps. Can you imagine a cowboy riding on a horse with the revolver flopping around? An accident was waiting to happen.
This is why up to this day it is recommended to load 5 rounds only and to leave one chamber empty. Then the empty chamber can be turned to be right in front of the hammer. In this way the revolver will never shoot by accident. Of course you can load all 6 if you are in a shooting range or are no planning on going anywhere. But if you are about to go on a walk or ride a horse, you should not fill up the cylinder.
I have no idea what happened, but I won't dismiss a theory out of hand without understanding that it is possible for older firearms to fire without the trigger. And most importantly I think investigators would be very interested in seeing any footage (even if it's just crude video) of this scene. I don't believe they had production video running since it was a rehearsal. But it might be possible to see if his finger was on the trigger and/or it was pulled.
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