I 100% agree, and said as much in an earlier post.
I'm sure some do. But I suspect the majority are coached on how to handle it for realism. Do you watch movies? Do you see any major motion...
You say that like everyone has firearm training. Most actors do not. That's why there is an armorer on set to perform that essential task. That is...
There are enormous amounts of safety protocols on film sets that span all departments (camera, grip and electric, stunts, pyrotechnics, weapons,...