Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


Reply

Measuring Scope Height with a 20MOA Rail ??

 
LinkBack Thread Tools Display Modes
  #1  
Old 10-04-2010, 03:55 AM
Bronze Member
 
Join Date: Jan 2010
Location: Sydney Australia
Posts: 73
Measuring Scope Height with a 20MOA Rail ??

Hi Guys,,,yes it's probably been asked before but i cant find a clear answer ?? Is it possible to do ?? where do we measure from ?? I have measured from firing pin to centre of the scope mounts.....as the rail is higher at the rear, is it better to measure at the objective ???

Cheers, Ray.....
__________________
"If it's Feral it's in Peril !"


Reply With Quote
  #2  
Old 08-29-2013, 10:28 PM
Junior Member
 
Join Date: Aug 2013
Location: Northern Nevada
Posts: 1
Re: Measuring Scope Height with a 20MOA Rail ??

Does anyone have an answer to this? I would also appreciate the help.
Reply With Quote
  #3  
Old 09-03-2013, 03:57 PM
Bronze Member
 
Join Date: Jul 2013
Posts: 84
Re: Measuring Scope Height with a 20MOA Rail ??

Ive always measured scope tube and bolt diameter, and distance form bolt to scope. Take half the tube half the bolt and add them numbers to distance between tube and bolt. Always work great for me out past a thousand.
Reply With Quote
  #4  
Old 09-03-2013, 05:05 PM
Platinum Member
 
Join Date: Jan 2008
Location: West Central Idaho
Posts: 1,081
Re: Measuring Scope Height with a 20MOA Rail ??

I measure center of the bolt to center of the tube at the center of the elevation knob. In my pea brain and limited knowledge of the modern rifle scope that is the place that makes the most sense to me.

Someone with a more working knowledge of a rifle scope should chime in as to whether it makes a difference as to where in the elevation scheme your zero lies. I use a 10MOA base and where the scope is zeroed leaves about 45MOA up so it is zeroed off center. Does that make a difference?

In my setup a 1/8 inch difference 1.75" verses 1.875" equals a .5 MOA difference in Exbal at 800 yards. Measuring at the center of the elevation turret very carefully has worked OK for me as far as I can tell and that adjustment is 1.875".

On another note that is another adjustment one can make when proving a drop chart and trying to make all points of impact agree with the generated chart especially farther out even though I have not done that....food for thought.
__________________
Jim



There is something about the outside of a horse that is good for the inside of a man. Sir Winston Churchill.

Everything that is really great and inspiring is created by the individual who can labor in freedom. Einstein
Reply With Quote
  #5  
Old 09-04-2013, 08:50 AM
Platinum Member
 
Join Date: Jul 2011
Location: Pennsylvania
Posts: 1,144
Re: Measuring Scope Height with a 20MOA Rail ??

Determining Scope Height Above Bore within AccurateShooter.com
__________________

"The only thing necessary for the triumph of evil is for good men to do nothing"

http://www.longrangehunting.com/foru...4-build-83765/ - Build Thread

http://www.longrangehunting.com/foru...-284-a-124876/ - Gun Pictures
Reply With Quote
  #6  
Old 09-04-2013, 10:10 AM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,739
Re: Measuring Scope Height with a 20MOA Rail ??

Quote:
Originally Posted by kcebcj View Post
I measure center of the bolt to center of the tube at the center of the elevation knob.
This is what I do too and it makes sense to me. If there is a better way or reason to do it different I would like to know.

Jeff
__________________
Reply With Quote
  #7  
Old 09-04-2013, 08:04 PM
Silver Member
 
Join Date: Feb 2012
Location: eastern,wa
Posts: 438
Re: Measuring Scope Height with a 20MOA Rail ??

tell me if this is wrong, i measure the scope objective bell/ by 2, then measure the diameter of the barrel directly below that and / by 2 then add those two numbers to the distance between the bell and barrel rite?
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Measuring Scope Height with a 20MOA Rail ??
Thread Thread Starter Forum Replies Last Post
Measuring scope height elkstalker300 Long Range Hunting & Shooting 27 06-07-2014 06:22 PM
EGW 20moa rail for 700 sa--SPF Brad from ND Optics For Sale 0 03-19-2011 11:07 AM
measuring scope height using canted bases Frogman77 Long Range Hunting & Shooting 1 05-19-2009 10:32 PM
Measuring Scope Height?? Moman Long Range Scopes and Other Optics 1 03-18-2008 07:52 PM
Measuring scope-to-bore height ?? Holmes Long Range Scopes and Other Optics 2 04-08-2003 03:25 PM

Current Poll
I currently have hunting preference points in the following states

All times are GMT -5. The time now is 02:41 PM.


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