Ey up folks, wondering if you can shed some light on some trouble I had last night.
I have purchased a new Hawke sport HD 3-9x40 for my prosport and went down to the range last night to zero in.
Got a rough zero, then unscrewed the locking ring on the objective to get a fine focus to help fine tune the zero.
Screwed the locking ring back on after setting the focus, double checked it and went on with zeroing.
Went back in after a 10 min break and the image was blurry, the focus was too far away, so readjusted it again.
Same thing happened again.
Any idea what's going on? Is my spring