Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Long Range Scopes and Other Optics

Long Range Scopes and Other Optics Nightforce Optics


Reply

Bushnell 4200 vertical adjustment issue

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-22-2009, 07:23 PM
Bronze Member
 
Join Date: Feb 2008
Location: Mesa, AZ
Posts: 69
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?

Scott

Last edited by sxwatson; 01-22-2009 at 08:48 PM.
Reply With Quote
  #2  
Old 01-23-2009, 10:41 PM
Silver Member
 
Join Date: May 2007
Location: Alabama
Posts: 157
Re: Bushnell 4200 vertical adjustment issue

Scott was the 100 yard distance actually measured? If your target was 105 yards instead of 100 it would give you 32.98 inches instead of 31.41 inches. Just something to check before you send the scope back.

David
Reply With Quote
  #3  
Old 01-23-2009, 11:02 PM
Platinum Member
 
Join Date: Dec 2002
Location: Northern Michigan
Posts: 1,014
Re: Bushnell 4200 vertical adjustment issue

If its repeatable I wouldn't worry about it, just modify your drop charts and or Exbal to coincide with your scope adjustments. This is exactly why it is a good idea to check these things.

I also agree you should double check your yardage.
Reply With Quote
  #4  
Old 01-24-2009, 05:50 PM
Bronze Member
 
Join Date: Feb 2008
Location: Mesa, AZ
Posts: 69
Re: Bushnell 4200 vertical adjustment issue

You guys are exactly right. The 100 yard line at my range is really 106 yards. Shot in a 500 yard F-class match today and it dialed right to 500 based on 12 moa per full rotation. Thanks for the sound advice.

Scott
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Bushnell 4200 vertical adjustment issue
Thread Thread Starter Forum Replies Last Post
WTS: Bushnell Elite 3200, Bushnell Elite 4200 and Bushnell Elite 6500 models sale Weby Shops Optics For Sale 0 04-29-2011 03:06 PM
X mark pro trigger adjustment issue hilltop101 Gunsmithing 11 08-08-2010 10:15 PM
How much vertical adjustment is enough? bookworm Long Range Scopes and Other Optics 2 12-13-2008 02:58 PM
Bino/rangerfinder combo - bushnell and others- eye dominance issue? BROWN TROUT Long Range Scopes and Other Optics 2 11-01-2005 08:30 PM
best range of vertical adjustment in a 1" tube? rlipson Long Range Scopes and Other Optics 4 04-08-2005 08:17 AM


All times are GMT -5. The time now is 07:39 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC