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Rifles, Reloading, Optics, Equipment
Gunsmithing
Help figuring MOA of a rail base
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<blockquote data-quote="NesikaChad" data-source="post: 345980" data-attributes="member: 7449"><p>Ya' got me! I hadn't thought of the changes in height from the receiver ring to the rear bridge.</p><p></p><p>Dern it.</p><p></p><p>I think the math is the same though, one just needs to know the differences in height. It can vary a bit, but nominally it's .125". I've measured some though that were quite different and this would have a significant influence.</p><p></p><p></p><p>One way around this would be to stick the bolt in and measure from the top of the bolt to the top of the base in the rear. A guy could calculate from bore center this way. The front would be easy, just add the ring OD and split it.</p></blockquote><p></p>
[QUOTE="NesikaChad, post: 345980, member: 7449"] Ya' got me! I hadn't thought of the changes in height from the receiver ring to the rear bridge. Dern it. I think the math is the same though, one just needs to know the differences in height. It can vary a bit, but nominally it's .125". I've measured some though that were quite different and this would have a significant influence. One way around this would be to stick the bolt in and measure from the top of the bolt to the top of the base in the rear. A guy could calculate from bore center this way. The front would be easy, just add the ring OD and split it. [/QUOTE]
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Help figuring MOA of a rail base
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