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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Elevation and changing zeros
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<blockquote data-quote="birdrl" data-source="post: 377855" data-attributes="member: 8620"><p>Ok I read the sticky on altitude and barometric pressure. I am still confused. Here is my question. How do I calculate the change in my zero if I sight in my rifle at 1000 feet elevation with standard atmospheric conditions at 100 yards and actually test my drops on my BDC reticle then go to 3000 feet elevation with standard atmospheric conditions, now my 100 yard zero is over 1 inch different and my reticle yardages are also different? Maybe I don't understand the terminology in these ballistic programs but I don't see where you can calculate what those differences will be. Thanks</p></blockquote><p></p>
[QUOTE="birdrl, post: 377855, member: 8620"] Ok I read the sticky on altitude and barometric pressure. I am still confused. Here is my question. How do I calculate the change in my zero if I sight in my rifle at 1000 feet elevation with standard atmospheric conditions at 100 yards and actually test my drops on my BDC reticle then go to 3000 feet elevation with standard atmospheric conditions, now my 100 yard zero is over 1 inch different and my reticle yardages are also different? Maybe I don't understand the terminology in these ballistic programs but I don't see where you can calculate what those differences will be. Thanks [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Elevation and changing zeros
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