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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
SIG Kilo 2400 with Applied Ballistics!!
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<blockquote data-quote="DocUSMCRetired" data-source="post: 1333612" data-attributes="member: 85458"><p>I believe what is going on here, is a misunderstanding of what is being reported by device. The Device reports Density Altitude, and Station Pressure, and what you are comparing is against is Known altitude and Barometric Pressure.</p><p></p><p>Barometric Pressure is Pressure that has been corrected for Altitude to prevent aircraft from crashing in to the ground. It is calibrated for the specific location that it is recorded at. The Sig Kilo does not read Barometric Pressure. It reads Station Pressure, or the absolute pressure at its location. Which is what the bullet is going to experience. We can see this, by reversing the information you have provided.</p><p></p><p>If I take 29.85 Pressure, and 6600 Altitude, I get About 23.40 inHG. Which is close to what your Sig Kilo is showing at "23.50 inHG". You can do the reverse math here: <a href="http://www.csgnetwork.com/stationpressurecalc.html" target="_blank">http://www.csgnetwork.com/stationpressurecalc.html</a></p><p></p><p>On to the second point, of doing a ballistic calibration. This MUST BE DONE in the field, at the time you do it. Everything is important from the direction of fire (The Kilo needs to be pointed at the target) to the Wind you have input. You can see this in the video below, where I show you how even the smallest thing effects a ballistic calibration: [MEDIA=youtube]wf5p_7_8S1Q[/MEDIA] </p><p></p><p>If you don't do the calibration in the field, at the time you shoot, then it will be off. Because every single input is important to the accuracy of the Ballistic Calibration.</p></blockquote><p></p>
[QUOTE="DocUSMCRetired, post: 1333612, member: 85458"] I believe what is going on here, is a misunderstanding of what is being reported by device. The Device reports Density Altitude, and Station Pressure, and what you are comparing is against is Known altitude and Barometric Pressure. Barometric Pressure is Pressure that has been corrected for Altitude to prevent aircraft from crashing in to the ground. It is calibrated for the specific location that it is recorded at. The Sig Kilo does not read Barometric Pressure. It reads Station Pressure, or the absolute pressure at its location. Which is what the bullet is going to experience. We can see this, by reversing the information you have provided. If I take 29.85 Pressure, and 6600 Altitude, I get About 23.40 inHG. Which is close to what your Sig Kilo is showing at "23.50 inHG". You can do the reverse math here: [URL]http://www.csgnetwork.com/stationpressurecalc.html[/URL] On to the second point, of doing a ballistic calibration. This MUST BE DONE in the field, at the time you do it. Everything is important from the direction of fire (The Kilo needs to be pointed at the target) to the Wind you have input. You can see this in the video below, where I show you how even the smallest thing effects a ballistic calibration: [MEDIA=youtube]wf5p_7_8S1Q[/MEDIA] If you don't do the calibration in the field, at the time you shoot, then it will be off. Because every single input is important to the accuracy of the Ballistic Calibration. [/QUOTE]
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SIG Kilo 2400 with Applied Ballistics!!
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