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Measuring Scope Height with a 20MOA Rail ??

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  #8  
Unread 09-11-2013, 05:13 PM
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Join Date: Sep 2013
Location: S.E. Louisiana
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Re: Measuring Scope Height with a 20MOA Rail ??

Quote:
Originally Posted by calib View Post
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?

Close. A 20 moa cantered rail would be a little off, thus I use...

Formula= (Scope's "Tube Diameter"\2) + (Bolt's "Diameter"\2) + (Distance between bottom of scope tube and top of bolt in middle of tube area equally between ring mounts) = Scope Height!

Just as C.O.Shooter posted!

http://www.accurateshooter.com/optics/determining-scope-height-above-bore/
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  •   #9  
    Unread 09-11-2013, 05:42 PM
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    Join Date: Feb 2012
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    Re: Measuring Scope Height with a 20MOA Rail ??

    Im gonna have to try it and see how far off it is. Thanks
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      #10  
    Unread 09-12-2013, 10:57 AM
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    Join Date: Jan 2012
    Location: Carlsbad, NM
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    Re: Measuring Scope Height with a 20MOA Rail ??

    My best guess would be that the optically correct location to measure the height to would be the center of the exit pupil (if you can find it).
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      #11  
    Unread 09-12-2013, 11:13 AM
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    Join Date: Aug 2008
    Location: east central fl. /n.c. pa.
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    Re: Measuring Scope Height with a 20MOA Rail ??

    there comes a point where its best to accept easy answers unfair as that may seem at times. which is another way of saying just go shoot the freakin thing.
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      #12  
    Unread 09-12-2013, 11:53 AM
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    Join Date: Nov 2010
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    Re: Measuring Scope Height with a 20MOA Rail ??

    Quote:
    Originally Posted by yobuck View Post
    there comes a point where its best to accept easy answers unfair as that may seem at times. which is another way of saying just go shoot the freakin thing.

    Well said!

    Out of curiosity, I just ran the data, on Exbal, for one of my rifles at 1000 yds. The elevation at that distance came back as 28.25 MOA. I then went back and only changed the scope height from 1.75" to 2.0". That elevation came back as 28.0 MOA.

    1/4 MOA change at 1000 for a 1/4" difference in scope height.

    I just wish I had a place to shoot at 1000 to demonstrate it!


    Pete
    __________________
    How a politician stands on the Second Amendment tells you how he or she views you as an individualů as a trustworthy and productive citizen, or as part of an unruly crowd that needs to be lorded over, controlled, supervised, and taken care of. ~ Suzanna Gratia Hupp ~ Texas State Representative (R), survivor of 'Luby's Massacre' where both her parents were among 23 people fatally shot and 50 others wounded
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      #13  
    Unread 09-12-2013, 12:58 PM
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    Join Date: Mar 2012
    Location: Bozeangeles
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    Re: Measuring Scope Height with a 20MOA Rail ??

    As previously mentioned, measuring & adjusting to fit dope seems to work the best for me. I measure at the turrets, then tweak it to fit actual poi at range
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