Bushnell 4200 vertical adjustment issue
Just picked up a 4200 Elite Tactical 6-24x50. Really nice scope.
I checked the scope for "crabbing" at the range. (drift to the left or right when applying vertical adjustment to the scope.)
1. Zero'd scope at 100 yards.
2. Made up a target on cardboard that is basically like following Darrel Holland's article on Reticle Perpendicularity. (Catshooter actually wrote a much better article on scope mounting in general that I read on 6mmbr.com) Made sure when placing the target the vertical line was in fact vertical using a level.
3. Put two shots in a 1/2" circle I drew at bottom of cardboard target.
4. Came up 30 MOA (unfortunately all the vertical adjustment I can get out of it, need to offset a little more).
5. Fired again at same 1/2" target. Hit less than 1/4" right of vertical line. Repeated shot to verify results.
6. Tweaked scope slightly to the left and repeated until the shots were on the vertical line.
All was good and I was a happy camper. Then I decided to measure the distance from the 2 shots at the bottom of the target in the 1/2" circle up to the shots at the top. I came up 30 MOA which should be 31.41" at 100 yards. All 4 of the shots that were made at the top of the target were at 32.75". A difference of 1.34" or .446 extra MOA for every 10 MOA of rotation.
Does this all sound right? AM I doing something wrong?
If I did do everything right - Has anyone else experienced this with there scopes? Do you think I will be able to send this back to Bushnell to have it fixed or is this an acceptable amount of "slop" in the adjustment?
Last edited by sxwatson; 01-22-2009 at 08:48 PM.