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Long Range Hunting & Shooting
Station Pressure and Ballistic FTE
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<blockquote data-quote="orkan" data-source="post: 406923" data-attributes="member: 25377"><p>I've been reading heavily in regard to the use of station pressure rather than corrected barometric pressure when working a shooting solution. I'm trying to setup Ballistic FTE correctly, but I'm not completely sure of the settings. My hope is that with some help, we can figure it out and people like myself will be able to reference it here via a simple google search. I'll try to explain my understanding, then you guys can maybe tell me where I'm off or shine some light. </p><p></p><p>To get the station pressure I use my kestrel 4000NV on the barometric pressure page, with a reference altitude set to zero. If I understood correctly, this reading is the station pressure rather than corrected baro. Am I correct on that? </p><p></p><p>So on to Ballistic. The way I understand station pressure as it relates to most ballistic programs is this: Set the elevation to "0" and put the station pressure into the "baro pressure" field. Am I correct on that? </p><p></p><p>In the "trajectory" page there is a section for "zero atmosphere" and "current atmosphere." My understanding of this is that zero atmosphere is the exact range conditions when the rifle was zeroed and current is the conditions as they are at the time of the shot you are making now. On both the zero atmosphere and current atmosphere pages there is a setting of "on" or "off" for "Pressure is absolute." </p><p></p><p>My question is, what exactly does this setting control, and how does it relate to using station pressure? </p><p></p><p>Thanks in advance!</p></blockquote><p></p>
[QUOTE="orkan, post: 406923, member: 25377"] I've been reading heavily in regard to the use of station pressure rather than corrected barometric pressure when working a shooting solution. I'm trying to setup Ballistic FTE correctly, but I'm not completely sure of the settings. My hope is that with some help, we can figure it out and people like myself will be able to reference it here via a simple google search. I'll try to explain my understanding, then you guys can maybe tell me where I'm off or shine some light. To get the station pressure I use my kestrel 4000NV on the barometric pressure page, with a reference altitude set to zero. If I understood correctly, this reading is the station pressure rather than corrected baro. Am I correct on that? So on to Ballistic. The way I understand station pressure as it relates to most ballistic programs is this: Set the elevation to "0" and put the station pressure into the "baro pressure" field. Am I correct on that? In the "trajectory" page there is a section for "zero atmosphere" and "current atmosphere." My understanding of this is that zero atmosphere is the exact range conditions when the rifle was zeroed and current is the conditions as they are at the time of the shot you are making now. On both the zero atmosphere and current atmosphere pages there is a setting of "on" or "off" for "Pressure is absolute." My question is, what exactly does this setting control, and how does it relate to using station pressure? Thanks in advance! [/QUOTE]
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