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Reticle Perpendicularity by Darrell Holland
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<blockquote data-quote="woods" data-source="post: 201633" data-attributes="member: 6042"><p>Mr Holland, wish I had found your article earlier and then I wouldn't have had to work through it myself. I have a 300 win mag with a Kahles MultiZero and experienced the rotational symptoms you talked about</p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/TARGETS/DSCN0290.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>so I made myself a crude sketch and figured out that when cranking for elevation the crosshairs were actually traveling along a divergent line and cause the problem</p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/SCOPES/reticle22-15-08001.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>the reticle moves along line A which would cause you to raise the rifle to point G and when you move the point of aim to center it would actually move the POI to point H and thus along line D. I solved this by slight scope rotation just as you suggest.</p><p></p><p>That started me thinking about cant and eventually I got the level-level-level and an anti-cant bubble for the scope</p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/SCOPES/DSCN0404.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>What do you think about the EXD device? <a href="http://www.brownells.com/aspx/NS/store/productdetail.aspx?p=6097&st=289-100-000&s=14989" target="_blank">EXD ENGINEERING VERTICAL RETICLE INSTRUMENT at Brownells</a></p><p></p><p>Someone mentioned David Tubbs cants his rifle. That's and understatement! </p><p></p><p><img src="http://img.photobucket.com/albums/v663/bwestfall/SCOPES/TubbSilhouetterifle.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="woods, post: 201633, member: 6042"] Mr Holland, wish I had found your article earlier and then I wouldn't have had to work through it myself. I have a 300 win mag with a Kahles MultiZero and experienced the rotational symptoms you talked about [IMG]http://img.photobucket.com/albums/v663/bwestfall/TARGETS/DSCN0290.jpg[/IMG] so I made myself a crude sketch and figured out that when cranking for elevation the crosshairs were actually traveling along a divergent line and cause the problem [IMG]http://img.photobucket.com/albums/v663/bwestfall/SCOPES/reticle22-15-08001.jpg[/IMG] the reticle moves along line A which would cause you to raise the rifle to point G and when you move the point of aim to center it would actually move the POI to point H and thus along line D. I solved this by slight scope rotation just as you suggest. That started me thinking about cant and eventually I got the level-level-level and an anti-cant bubble for the scope [IMG]http://img.photobucket.com/albums/v663/bwestfall/SCOPES/DSCN0404.jpg[/IMG] What do you think about the EXD device? [url=http://www.brownells.com/aspx/NS/store/productdetail.aspx?p=6097&st=289-100-000&s=14989]EXD ENGINEERING VERTICAL RETICLE INSTRUMENT at Brownells[/url] Someone mentioned David Tubbs cants his rifle. That's and understatement! [IMG]http://img.photobucket.com/albums/v663/bwestfall/SCOPES/TubbSilhouetterifle.jpg[/IMG] [/QUOTE]
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