There are places where they're overly concerned with one's rate of fire.
Looks like their range master was going to give him the boot judging by how he was making a bee line for him.
Some outdoor ranges are very conservative about rate of fire, type of targets, steel-cored ammo, and such. That should be in the rules so you know before you join, though. It behooves the member to read said rules.
You can't blame the range. Insurance companies frown on such.
