Same rules apply to my private range on the Family Farm. My way (rules posted) or the highway. One warning, and one only. I’ve been shot (1974 robbery) once, and it won’t happen a second time.
The way to handle these things is clear rules and a kind reminder.
Never get antagonistic but never back down either.
If one guy don’t get it, he soon will, when there are 10 guys with fire arms that do get it.
Don’t be stupid.
The best safety is the one between your ears.
Sorry to hear you got shot.
A self defense situation needs no kindly reminder.
You go on red alert and get things under control.