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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 150 matrix test
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<blockquote data-quote="Pdvdh" data-source="post: 957358" data-attributes="member: 4191"><p>With a scope height of 1.9" and including coriolis drift, your G7 BC value calculates to <strong>0.320</strong></p><p></p><p>With a scope height of 1.9" and with no coriolis drift, the G7 BC calculation would be 0.326</p><p></p><p>Coriolis drift provided 1.2" of bullet lift on target at 885 yds, because of your easterly azimuth. The BC reduction from 0.326 to 0.320 accounts for that 1.2" of height that was from coriolis drift, rather than from bullet BC efficiency. We're starting to swat at the knat's ***, but these sort of calculations help keep me acquainted with ballistics stuff. </p><p></p><p><em>I didn't think</em> you could get your scope mounted that low without customizing the objective lens. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Pdvdh, post: 957358, member: 4191"] With a scope height of 1.9" and including coriolis drift, your G7 BC value calculates to [B]0.320[/B] With a scope height of 1.9" and with no coriolis drift, the G7 BC calculation would be 0.326 Coriolis drift provided 1.2" of bullet lift on target at 885 yds, because of your easterly azimuth. The BC reduction from 0.326 to 0.320 accounts for that 1.2" of height that was from coriolis drift, rather than from bullet BC efficiency. We're starting to swat at the knat's ***, but these sort of calculations help keep me acquainted with ballistics stuff. [I]I didn't think[/I] you could get your scope mounted that low without customizing the objective lens. :) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 150 matrix test
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