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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Altitude vs. Barometric pressure
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<blockquote data-quote="Mikecr" data-source="post: 150326" data-attributes="member: 1521"><p>Density altitude IS an alternate..</p><p>The most accurate parameters are those that are measured, and that have been used all along:</p><p>Absolute Pressure</p><p>Temperature</p><p>Relative Humidity</p><p></p><p>These are all that's needed and a Krestel measures them.</p><p>Ballistic software uses them for adjustment in different ways. Normally air density is calculated within this software, but not always. Density altitude could only be used directly in software that would convert DA to air density. </p><p>This is not common.</p><p></p><p>It may be that use of DA works well for folks. It's a single number that <u>indirectly</u> relates to air density. But let's face it, it's use would also be easy to screw up. DA is not altitude, real or pressure. It has NOTHING to due with altitude. How many will miss that?</p><p>Thats why I'm skeptical about it really.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 150326, member: 1521"] Density altitude IS an alternate.. The most accurate parameters are those that are measured, and that have been used all along: Absolute Pressure Temperature Relative Humidity These are all that's needed and a Krestel measures them. Ballistic software uses them for adjustment in different ways. Normally air density is calculated within this software, but not always. Density altitude could only be used directly in software that would convert DA to air density. This is not common. It may be that use of DA works well for folks. It's a single number that <u>indirectly</u> relates to air density. But let's face it, it's use would also be easy to screw up. DA is not altitude, real or pressure. It has NOTHING to due with altitude. How many will miss that? Thats why I'm skeptical about it really. [/QUOTE]
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Altitude vs. Barometric pressure
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