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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Altitude vs. Barometric pressure
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<blockquote data-quote="User4302021" data-source="post: 1518051" data-attributes="member: 105322"><p>I should have mentioned earlier, if you don't have a way to get station pressure in the field, then you can just put in standard station pressure for that altitude.</p><p></p><p>If you don't know it, it is easy to figure. It is 29.92 inHg at sea level and is very very close to a 1 inHg change per 1,000 ft elevation change. So 1,000 ft would be 28.92 inHg, 3,000 ft would be 26.92 inHg etc...</p><p></p><p>At any given location, the station pressure very rarely varies by more than 0.5 inHg from standard pressure from day to day, much less throughout a single day.</p></blockquote><p></p>
[QUOTE="User4302021, post: 1518051, member: 105322"] I should have mentioned earlier, if you don't have a way to get station pressure in the field, then you can just put in standard station pressure for that altitude. If you don't know it, it is easy to figure. It is 29.92 inHg at sea level and is very very close to a 1 inHg change per 1,000 ft elevation change. So 1,000 ft would be 28.92 inHg, 3,000 ft would be 26.92 inHg etc... At any given location, the station pressure very rarely varies by more than 0.5 inHg from standard pressure from day to day, much less throughout a single day. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Altitude vs. Barometric pressure
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