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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
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<blockquote data-quote="Mikecr" data-source="post: 1046142" data-attributes="member: 1521"><p>I think what has been missed earlier is that once scope elevation is plumb, cant error is removed with that 'firing level'.</p><p>Now all that's left is any drift offset from the bore underneath, while firing at ranges different than zero range. This is independent from elevation dial/hold at that point, and is a matter only of windage dial/hold.</p><p></p><p>It's hard to predict how much offset there would be because even the best barrel brand bores index to something other than perfectly straight. And then there is the matter of an action bedded into a stock without accounting for this, or even stock perfectly level for that matter.</p><p>So I don't think we can get offset perfect.</p><p>But we know we can get things close enough, and that takes care of offset best as we can.</p><p></p><p>Well, any normal bit of offset is not as damaging as cant. Nowhere near so.</p><p>I really want to remove cant.</p><p>So I do so by setting my scope elevation adjustment plumb.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1046142, member: 1521"] I think what has been missed earlier is that once scope elevation is plumb, cant error is removed with that 'firing level'. Now all that's left is any drift offset from the bore underneath, while firing at ranges different than zero range. This is independent from elevation dial/hold at that point, and is a matter only of windage dial/hold. It's hard to predict how much offset there would be because even the best barrel brand bores index to something other than perfectly straight. And then there is the matter of an action bedded into a stock without accounting for this, or even stock perfectly level for that matter. So I don't think we can get offset perfect. But we know we can get things close enough, and that takes care of offset best as we can. Well, any normal bit of offset is not as damaging as cant. Nowhere near so. I really want to remove cant. So I do so by setting my scope elevation adjustment plumb. [/QUOTE]
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