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Long Range Hunting & Shooting
Station Pressure and Ballistic FTE
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<blockquote data-quote="Jumpalot" data-source="post: 407467" data-attributes="member: 4867"><p>Now you've had me messing with mine for an hour. I may be wrong but I'll take a stab at it. Absolute pressure is station pressure. If you turn on "pressure is absolute" you can on can only enter baro. pressure. Therefore, when you read your Kestral, you have to have altitude referenced to zero so you get a station pressure and then enter that into Ballistic FTE. If you turn off "pressure is absolute", you can enter baro. pressure and altitude. So your Kestral would have to give you an accurate elevation and a corrected pressure reading to enter into Ballistic FTE. I think you're better to leave elevation set to zero on both and use the station pressure reading. If I set elevation to zero and enter station pressure on Ballistic FTE, I can turn "pressure is absolute" on or off and it doesn't effect my trajectory print out untill I change the elevation. </p><p> My recommendation:Use station pressure, turn on "pressure is absolute" then you can't change elevation from zero. </p><p> On or off doesn't matter as long as elevation is set to zero and you enter station pressure. </p><p> I hope this didn't muddy it up too much. Again, I've had to just play with mine until I start figuring it out.</p></blockquote><p></p>
[QUOTE="Jumpalot, post: 407467, member: 4867"] Now you've had me messing with mine for an hour. I may be wrong but I'll take a stab at it. Absolute pressure is station pressure. If you turn on "pressure is absolute" you can on can only enter baro. pressure. Therefore, when you read your Kestral, you have to have altitude referenced to zero so you get a station pressure and then enter that into Ballistic FTE. If you turn off "pressure is absolute", you can enter baro. pressure and altitude. So your Kestral would have to give you an accurate elevation and a corrected pressure reading to enter into Ballistic FTE. I think you're better to leave elevation set to zero on both and use the station pressure reading. If I set elevation to zero and enter station pressure on Ballistic FTE, I can turn "pressure is absolute" on or off and it doesn't effect my trajectory print out untill I change the elevation. My recommendation:Use station pressure, turn on "pressure is absolute" then you can't change elevation from zero. On or off doesn't matter as long as elevation is set to zero and you enter station pressure. I hope this didn't muddy it up too much. Again, I've had to just play with mine until I start figuring it out. [/QUOTE]
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Station Pressure and Ballistic FTE
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