The little I know of the movie industry aside, I can envision a producer/director demanding a certain 'look' they desire and demand a functioning firearm that satisfies that look. Real props are completely incapable of discharging a projectile, but the pressure wave can be significant at extremely close range. However, the fact that two were shot, to me, rules out the accidental aspect. Not a misfire, and with two pulls of the trigger, it'll be hard to argue negligence. With the small amount of information available it looks either deliberate or completely reckless/dumbassery. But I'm not on the jury that will hear it,,,,,yet.
