Are you talking about a scope with a BDC Reticle
I have a Nikon 3-9 on my 30-06. A cheapie simmons on the .22 and a bushnell on the 7-08 None of them do it eitherThat intriqued me. I got mine out. Its a 4.5x14.5 nikon buckmaster with a milcon recpicle. IT DONT DO THAT !!! I even looked thru two centerpoints, a couple cheap tascos and a bushnell and the 32x and 24x simmons. Didnt happen with any of them. ????????????????????????????????????????
I contacted Nikon. The service rep said send it in for repair or replacement free of charge, Its in the mailThe parallax adjustment is on the objective lens. It can be done by you, but might be easier to send it in for adjustment. You need the correct size spanner wrench.