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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help with some ballistics
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<blockquote data-quote="DocUSMCRetired" data-source="post: 1228335" data-attributes="member: 85458"><p>If you are starting at 800 feet, then I would start at 29.667 pressure (station pressure), then subtract .354 for every 1000 feet. Because sea level is 29.95. This is not going to be near exact, but much better than running 30.00. It is not as accurate the farther you go from sea level, and this is station pressure not barometric. But it can help get you an idea of what you are looking at. Nothing is going to beat using the full on formula, or doing the research on where you will be. The best way, would be to use a Kestrel Elite, or Drop 3. But if we have to guess, this will let you guess. Just understand its flawed. But you have the right idea. Its better than using 30.00.</p></blockquote><p></p>
[QUOTE="DocUSMCRetired, post: 1228335, member: 85458"] If you are starting at 800 feet, then I would start at 29.667 pressure (station pressure), then subtract .354 for every 1000 feet. Because sea level is 29.95. This is not going to be near exact, but much better than running 30.00. It is not as accurate the farther you go from sea level, and this is station pressure not barometric. But it can help get you an idea of what you are looking at. Nothing is going to beat using the full on formula, or doing the research on where you will be. The best way, would be to use a Kestrel Elite, or Drop 3. But if we have to guess, this will let you guess. Just understand its flawed. But you have the right idea. Its better than using 30.00. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
Help with some ballistics
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