Boxer's post is excellent. It's posts like that that make him an asset to the forums. IME, he's absolutely right. Of course, I assumed that Rick was using a proven optic, but something that I do with all my scopes before ever firing a round is to mount the scope properly, stress-free, using proper torque values, and then attach my Bushnell magnetic boresighter to the muzzle. The boresighter uses a grid with squares that measure 16MOA each, using a distance from the objective bell of about 22". This proves to be a mighty handy tool for testing reticle and erector values, travel, and usable elevation adjustment limits both with windage at mechanical center and with various amounts of windage dialed in.
Rick, have you been using more than one load in the rifle? If the AM load is the only load that isn't tracking properly with the software output, but other loads are matching up nicely with their respecive drop tables, then the optic isn't the issue.
