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Hunting
Long Range Hunting & Shooting
Measuring Scope Height with a 20MOA Rail ??
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<blockquote data-quote="kcebcj" data-source="post: 846431" data-attributes="member: 10391"><p>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. </p><p> </p><p> 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?</p><p> </p><p> 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".</p><p> </p><p> 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.</p></blockquote><p></p>
[QUOTE="kcebcj, post: 846431, member: 10391"] 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. [/QUOTE]
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Measuring Scope Height with a 20MOA Rail ??
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