In PA we have a lot of idiots, most of whom I wouldn't trust to commit suicide for fear they'd screw that up. In all seriousness you should just tell him hey bud maybe its not for you, I have a friend who gets real excited and misses a lot, but if your with him whispering stay calm stay calm its just a target, he'll 12 ring them every time.
All I can say is talk it out and if not then its time for a beat down.
Ryan.