Never had this happen before on the range

[Nuclearcricket]

Randy brought up an excellent point, your friend that your trying to teach to use open sights might have an eye dominance problem. I honestly dont know if that would show up with shooting with a scope or not but it is something that is easy to diagnose. Just have him look at something and then cover that object with his right thumb. Then just cover one eye and see if the object is still covered. If you cover his left eye and the thumb doesn't cover the object any more then he is left eye dominate. From there you can then work on a solution.
Sam