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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Please help me calculate ballistic coefficient using down range velocities from Shot Marker
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<blockquote data-quote="Pdvdh" data-source="post: 2576452" data-attributes="member: 4191"><p>I see nothing in the prior post that allows the input of the actual atmospheric conditions at the location you shoot and collect bullet velocity. Until the link to the JBM ballistics calculator. </p><p></p><p>If your station atmospheric condition data (Pressure, Temperature) is off just a little bit, you'll end up with error in your BC calculation. I changed temperature just 1 degree Fahrenheit yesterday when calculating BC values using LabRadar velocity data. Was surprised how much it affected the BC value calculated by my ballistics program.</p><p></p><p>To have any chance of calculating an accurate BC, you need to collect, and input, accurate atmospheric conditions into the ballistics program.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 2576452, member: 4191"] I see nothing in the prior post that allows the input of the actual atmospheric conditions at the location you shoot and collect bullet velocity. Until the link to the JBM ballistics calculator. If your station atmospheric condition data (Pressure, Temperature) is off just a little bit, you'll end up with error in your BC calculation. I changed temperature just 1 degree Fahrenheit yesterday when calculating BC values using LabRadar velocity data. Was surprised how much it affected the BC value calculated by my ballistics program. To have any chance of calculating an accurate BC, you need to collect, and input, accurate atmospheric conditions into the ballistics program. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Please help me calculate ballistic coefficient using down range velocities from Shot Marker
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