Originally Posted by Nimrodmar10
You're right there is a ring. But all that is locked down solid. The movement is the entire rear lens assembly including the power adjustment assembly. It all moves on the rotation point for the power adjustment.
I am a Nightforce owner. If the only movement is the entire rear eyepiece assembly rotating as you change power, there is no issue. If the crosshairs move when you rotate the eyepiece, there is a problem. I still think calling Nightforce is the answer.
I also wouldn't be surprised if you have a bad barrel or the throat is eroded badly. If I were running a 7 RUM, I'd use a Lothar Walter stainless barrel (the stainless LW uses lasts about triple a factory barrel) in an LV taper and make it 30" long.