Thank you for taking time to help answer this question. I'm new to Nightforce and ballistic turrets. I have a Zero Stop NXS on top of a 300 Win Mag. Had it all built/rigged by Gunsmith. I laser bore sighted it (to try to avoid wasting rounds), and took it to the range today. I Zero'd it at 100 to take complete advantage of the turret system. Came home to set the Zero stop, and found I can't do it because to get Zero at 100, required the turret to be turned up high, past the 2nd turret ring. Is that normal? I came back home and turned the turret all the way down to where it was seated just above the 1st turret ring, and put the laser bore sight device in, and, have confirmed that in order for the rifle to be Zero'd at 100, I would have to spin the turret all the way up high again, past the 2nd turret ring. When it is that high, you can't set the Zero Stop because the set screws on the turret cover are too high to tighten the cap on, after the upper clutch face is turned down against the lower clutch face. Could it be that my scope is mounted too low? I did as much on-line research as I could to try and find an answer, but came up empty handed. Any advise is appreciated very much.