At least that was at the range.
I saw that in elk camp in BC one time. The hunter claimed he had used the gun before, but it wasn't sighted in and the guides helping him couldn't get it sighted in either. One look at the scope and it was pretty easy to see what the problem was. Like you, I got a lot of blank stares until I put two rifles side be side and showed them the difference and explained it several more time. Guy finally got it sighted in to hunt. Didn't get a shot on game while there.
The hardest part was explaining to them the direction the reticle actually moves in relation to point of impact. That they never did understand and I just told them to move it the way I said.
