I don't need to guess, mine has 7/10 of a mil under 30, or 29 & 3/10 mils
And I'm proud to report that there is no distortion on the edges from 4.5 all the way to 30 power, even at the last click of adjustment. It seems to be a consistent scope all around, reticle is as useable on the outer edges as it is in the center.
Wont tell you it is stellar in brightness/contrast at 30 power, but that doesn't kill its resolution, tree bark at 1,000 or so yards is still discernable, so it's doing its job and I'm happy as of now.