I can't think of too many funny happenings at the range other than the time a group showed up with a civil war cannon. (they cleared one end of the rifle range, made the no smoking area a bit larger because of all the black powder, and let them shoot....boom!)
But I did read a thread on another forum about two guys shooting at a "rural" area used for a range. A few other guys came by "to watch". When the shooters were all done, the other guys asked.........all outa ammo? The shooters responded yep, we shot it all. The other guys pulled guns, robbed the shooters of their weapons and truck. The lesson was....if you are out with nobody else around, come and go with a loaded weapon.