This is a child's understanding of agency.

Standard gun safety rules do not apply on a movie set... This should be REALLY obvious. Movie sets use a completely different set of rules, and they seem to work fine because Hollywood has a much lower than average rate of incidents.

No. Not even a little. A movie set does not have to (and should not have to) follow the standard gun safety rules because their business often relies on handling firearms in an 'unsafe' manner.

Movies use a different set of rules, usually involving armourers, propmasters, assistant directors and other staff ensuring the safety of weapons on the set, and, most importantly, accepting liability in the case of an incident.

If I were an armourer on a movie set, I wouldn't want some stupid actor fucking around and tinkering and checking MY gun. If I have liability for that gun, you do not fuck with it because that's my ass on the line.