Whatever they do on the set of the John Wick movies they should do on all movie sets where guns are used. I don't know another movie besides (maybe) a war movie that uses more guns and I don't think there have been any accidents?The real question is what’s protocol on a movie set. What you’re saying is how normal people handle guns in situations where they would be putting live ammo in it. Now maybe it is protocol for even the talent to check a gun when handed to them even if someone yells out “cold gun” but I’d be surprised if that’s the case. I just don’t understand why they they’d even have actual guns on a movie set. Why wouldn’t they just have exact replicas that have no ability to fire a bullet?