I do MO Concealed Carry Classes which require a minimum of 140 rounds (70 each, revolver & auto) and in the past, I furnished a .22 revolver, .22 auto and ammo for anyone who wanted to use them. If this ammo situation doesn't level out soon, I'll start requiring that students furnish their own ammo.
If they are using centerfires, I don't mind at all if they use reloads. Heck, I used reloads through the 800 round NRA Police Firearms Instructor Development School.
I'm inclined to think if a man hasn't gotten his point across in 4912 attempts, 4913 probably isn't going to do it.