I generally agree with you Webleymkv, but I think a few of your points should be reworded to reduce the possibility of confusion due to the usual implications of some terms.
1. Alec Baldwin shot two people with a prop gun that was loaded with live ammunition.
Essentially true, but the gun only fired once. The bullet struck one person (killing her) and then struck a man behind her, wounding him. Baldwin did not "shoot two people" the way that phrase makes one think, the gun fired once, and two people were struck by the bullet.
Second point is "prop gun". Prop gun makes most people think of a realistic looking but non functional item, a movie prop. This was a real functional firearm being used as a movie prop. Small matter to be sure, but there is a difference.
4. The FBI examined the gun and found it to be in perfect working order which mean that, it order for it to fire, the trigger had to be pulled.
This is not yet 100% clear, as we do not yet have the entire FBI report text available to us. What we have are "details" that were leaked to the press, and we also have somewhat conflicting information from Baldwin's lawyers.
The lawyers claim the gun was broken (or that the FBI broke it during testing) And the FBI had to fix it in order to test it. At this point, we don't know the actual truth or what language is actually in the FBI report.
Certainly I agree that a Colt style SA revolver, in proper working condition and cocked, will not fire without the trigger being pulled. (it will fire if the hammer is struck when down on a live round, but that was not the case on the Rust movie set)
The armorer not being present while guns are being handled and filming is taking place seems very irregular and irresponsible to me.
It does, to me as well. Do note, however that the current information available to us at this time says that while the shooting did happen on the set, filming was not taking place. They were not filming a scripted scene, they were, supposedly doing "set up/prep work" to see what actor positions, camera angles and lighting would look best for an upcoming scene.
In other words, they were goofing around on the set, looking for what the Director liked best. Not scripted, so one can only consider it "improv".
and also consider Baldwin's "I didn't pull the trigger" might actually be true. He MIGHT NOT have "pulled" the trigger. He does admit to cocking the hammer. It is possible that he MIGHT have been holding the gun in such a way that he was holding the trigger back the entire time. It IS possible to do that.
IF that is what he did, then he didn't "pull the trigger" to fire the shot, and so would be certain he didn't pull the trigger. But if he was holding the gun so that he was holding the trigger back, then he DID pull the trigger when he picked up the gun, an kept it pulled, and so when he released the hammer, the gun (in proper working order) WOULD FIRE!
Its possible, but I think it more likely that he did pull the trigger and just doesn't have a memory of doing so, and therefore is convinced he didn't.
Accidently shooting someone is a very traumatic event. And the docs will tell you that it is not at all uncommon for someone to misremember or not remember small details due to the trauma of the event.
so, Baldwin may be telling the honest truth as he believes it, OR he may be a lying sack of snake ...skin trying to avoid being held accountable for something he knows he did.
As the saying goes...
"the jury is still out, on that one...."