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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
spin drift
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<blockquote data-quote="Mikecr" data-source="post: 190712" data-attributes="member: 1521"><p>I think you got it backwards augustus.</p><p>If you use holdover with your reticle, then a plumb vertical IS very important. Otherwise, if you dial in elevation with a std crosshair or dot reticle, the only thing that matters is a plumb turret.</p><p>And of course tracking either way.</p><p></p><p>Spin drift is NOT coriolis. Coriolis is known and calculated.</p><p>Spin drift is not so predictable as it varies with your particular shooting system components(like bullet & twist & local air density). Spin drift is also not accounted for in any ballistic software I've seen.</p><p></p><p>You will have to measure and account for it on your own. </p><p>Or limit your distances(which is practical)</p><p>Or shoot & shoot & shoot until finally hitting what you're aiming at(like so many others here).</p></blockquote><p></p>
[QUOTE="Mikecr, post: 190712, member: 1521"] I think you got it backwards augustus. If you use holdover with your reticle, then a plumb vertical IS very important. Otherwise, if you dial in elevation with a std crosshair or dot reticle, the only thing that matters is a plumb turret. And of course tracking either way. Spin drift is NOT coriolis. Coriolis is known and calculated. Spin drift is not so predictable as it varies with your particular shooting system components(like bullet & twist & local air density). Spin drift is also not accounted for in any ballistic software I've seen. You will have to measure and account for it on your own. Or limit your distances(which is practical) Or shoot & shoot & shoot until finally hitting what you're aiming at(like so many others here). [/QUOTE]
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spin drift
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