Ridgerunner, it could be that he' s just not adjusting the scope properly, and the round is still rising from the barrel to it' s highest point in the trajectory which will be well downrange. Of course, we are all assuming he' s moving the scope in the right direction. He needs to see where it' s hitting at 100 yards to see what' s going on. But first, he needs to get it bore sighted. That alone will help to determine what the problem may be.