The simple fact is that Baldwin relied on the armourer to do her job and was distracted preparing in the moment do his part acting so did not check himself. Checking however would have involved unloading, inspecting and reloading.
Buy1 being an old man who knows little about anything does not grasp the critical difference between a movie set dummy and a blank, a dummy does not fire at all but for a film will look real which matters when a revolver is being filmed from the front. The shooting happened during a test shot, for the live they would have changed rounds to get the powder flare or used CGI.
The armourer in turn was taking an action against the supplier of the dummy rounds claiming they put live rounds into boxes marked dummy.*
One could also argue that the people who knew a gun was about to be fired straight at them should also have sought certainty and not trusted in the armourer.
The state says there is a civil tariff for wrongful death. As Baldwin and the company settled the wrongful death with Halyna Hutchins' family the matter is closed. The armourer has her own accounting as possibly does the prop bullet supplier, I don't know what's going on there.
* As Buy1 certainly won't know being an old man who knows little, movie set dummy rounds are distinguished by a rattle sound when shaken, live don't do this.
