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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Leica's New Geovid HD-B
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<blockquote data-quote="Mikecr" data-source="post: 878339" data-attributes="member: 1521"><p>25.61"Hg is simple absolute pressure(this is good)</p><p>29.75"Hg is sea level adjusted pressure, given your input of 4100ft Altitude, assumption of standard altitude temperature(44.4degF), and binocular measure of 25.6"Hg absolute.</p><p></p><p>Altitude readings derived from either would be dependent on temperature.</p><p></p><p>My conern is about the use of measured pressure toward calculation of air density within the Geovid.</p><p>When we start converting to and back converting from altitude, and then applying results in common ballistic software, the probabilty of errors goes up.</p><p>The Geovid solution just needs to be validated against the best of today's ballistic software.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 878339, member: 1521"] 25.61"Hg is simple absolute pressure(this is good) 29.75"Hg is sea level adjusted pressure, given your input of 4100ft Altitude, assumption of standard altitude temperature(44.4degF), and binocular measure of 25.6"Hg absolute. Altitude readings derived from either would be dependent on temperature. My conern is about the use of measured pressure toward calculation of air density within the Geovid. When we start converting to and back converting from altitude, and then applying results in common ballistic software, the probabilty of errors goes up. The Geovid solution just needs to be validated against the best of today's ballistic software. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Leica's New Geovid HD-B
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