Unfortunately I think the only way to "know" is if you feel your scope has an "issue" with the optics, then send it in to Nightforce and have them look at it. But like Birddog mentions, how does the average shooter know whether or not the scope would fall into acceptable tolerances for NF's design?Here's my question, is "really bad" edge distortion abnormal? Or any edge distortion whatsoever?
Because if any edge distortion whatsoever is abnormal, they have a lot of work to do. All four NX8s I have looked through had it. The 20x versions were quite noticeable, pretty much in the "really bad" category. The 32x not quite as much.