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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Help?? Target turrets.
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<blockquote data-quote="royinidaho" data-source="post: 251112" data-attributes="member: 2011"><p>Measure diameter of scope end bell in inches.</p><p></p><p>Measure diameter of the barrel at exactly below where you measured the end bell.</p><p></p><p>Measure the total distance from the top of the scope's end bell to the bottom of the barrel at the same spot as the other two measurements.</p><p></p><p>Line of site/bore difference = Total distance - (1/2 end bell dia. - 1/2 barrel dia.)</p><p></p><p>That will get you close and only close. If you have tapered bases the measurement won't be 'that' close.</p><p></p><p>Use the measurement for your drop chart development.</p><p>Test the drop chart at distances.</p><p>Tweak line of sight to line of bore value to get really close before ordering any turrets.</p><p></p><p>I learned that on this board awhile back. Worked well for me.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 251112, member: 2011"] Measure diameter of scope end bell in inches. Measure diameter of the barrel at exactly below where you measured the end bell. Measure the total distance from the top of the scope's end bell to the bottom of the barrel at the same spot as the other two measurements. Line of site/bore difference = Total distance - (1/2 end bell dia. - 1/2 barrel dia.) That will get you close and only close. If you have tapered bases the measurement won't be 'that' close. Use the measurement for your drop chart development. Test the drop chart at distances. Tweak line of sight to line of bore value to get really close before ordering any turrets. I learned that on this board awhile back. Worked well for me. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Help?? Target turrets.
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