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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Altitude vs. Barometric pressure
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<blockquote data-quote="overbore" data-source="post: 124704" data-attributes="member: 2981"><p><strong>Re: 29.53 vs 29.92 In. Hg.</strong></p><p></p><p>If your computer will not link tothe chart, the numbers are dead simple: if Seal level has astandard pressure of 29.92" and the pressure decrease is one ince (1") for every 1,000 feet of shooting elevation, at 2,000' the standard pressure (QFE) is 28.92" and at 8,500 feet, subrtact 8.5" from the standard (29.92") or if you were wise enough to get the days wx before going out to shoot and they gave 30.02", 30.02"-8.5" or 22.52" uncorrected for air temp and humidity. The chart value is 22.22" ; close enough for Mr. Moose ; son just woke up and nailed his bull elk one shot 30-378. Overbore</p></blockquote><p></p>
[QUOTE="overbore, post: 124704, member: 2981"] [b]Re: 29.53 vs 29.92 In. Hg.[/b] If your computer will not link tothe chart, the numbers are dead simple: if Seal level has astandard pressure of 29.92" and the pressure decrease is one ince (1") for every 1,000 feet of shooting elevation, at 2,000' the standard pressure (QFE) is 28.92" and at 8,500 feet, subrtact 8.5" from the standard (29.92") or if you were wise enough to get the days wx before going out to shoot and they gave 30.02", 30.02"-8.5" or 22.52" uncorrected for air temp and humidity. The chart value is 22.22" ; close enough for Mr. Moose ; son just woke up and nailed his bull elk one shot 30-378. Overbore [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Altitude vs. Barometric pressure
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