Aka criminally negligent homicide. At some point it's been checked enough that not checking again isn't negligent.

It's not the actor's job to check the right kind and amount of explosives are in a squib, or the glass window is actually sugar, or whatever else safety related.

Apparently the live rounds looked just like the dummy rounds (which seems dumb) so I'm not sure how an actor would even know if the gun would go off or not.

Aka criminally negligent homicide. At some point it's been checked enough that not checking again isn't negligent.

It's not the actor's job to check the right kind and amount of explosives are in a squib, or the glass window is actually sugar, or whatever else safety related.

Apparently the live rounds looked just the dummy rounds (which seems dumb) so I'm not sure how an actor would even know if the gun would go off or not.