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Long Range Hunting & Shooting
Zero for big elevation change
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<blockquote data-quote="jebel" data-source="post: 1596772" data-attributes="member: 106189"><p>Yes, I've tested the Ballistics AE app several times by adjusting "current conditions" when I reach a hunt location and I've found it to be accurate. A few things that might help you get it to work:</p><ol> <li data-xf-list-type="ol">Just entering feet of elevation into the "current conditions" won't work. The program runs off of air pressure and temperature, so you need to enter those (you can leave the elevation figure blank).</li> <li data-xf-list-type="ol">For air pressure, make sure you're entering absolute pressure, a.k.a. station pressure, and not the adjusted barometric pressure you get from the nightly news. For example, if you're up at 9,000 feet, the station/absolute pressure should be around 21 inches Hg.</li> <li data-xf-list-type="ol">I would recommend tuning the program to your actual turret adjustments. Just because your scope turret says that each click is 0.25 MOA at 100 yards, does not mean it actually is. If you run an elevation tracking test and come out with something slightly different, you can set the app to that refined setting and it will tell you adjustments that are accurate to your actual scope.</li> </ol><p>You can test this sitting at home. Check your trajectory at your home elevation. Then input "current conditions" air pressure and temperature for a different location. If you don't have them handy, use International Standard Atmosphere figures for both (you can find a table through Internet searches). Re-calculate your trajectory and you should see that change.</p><p></p><p>Last, Ballistics AE is just one of several apps that do this. I'm sure there are some threads around here talking about the relative merits of one app over another, but there are several good ones.</p></blockquote><p></p>
[QUOTE="jebel, post: 1596772, member: 106189"] Yes, I've tested the Ballistics AE app several times by adjusting "current conditions" when I reach a hunt location and I've found it to be accurate. A few things that might help you get it to work: [LIST=1] [*]Just entering feet of elevation into the "current conditions" won't work. The program runs off of air pressure and temperature, so you need to enter those (you can leave the elevation figure blank). [*]For air pressure, make sure you're entering absolute pressure, a.k.a. station pressure, and not the adjusted barometric pressure you get from the nightly news. For example, if you're up at 9,000 feet, the station/absolute pressure should be around 21 inches Hg. [*]I would recommend tuning the program to your actual turret adjustments. Just because your scope turret says that each click is 0.25 MOA at 100 yards, does not mean it actually is. If you run an elevation tracking test and come out with something slightly different, you can set the app to that refined setting and it will tell you adjustments that are accurate to your actual scope. [/LIST] You can test this sitting at home. Check your trajectory at your home elevation. Then input "current conditions" air pressure and temperature for a different location. If you don't have them handy, use International Standard Atmosphere figures for both (you can find a table through Internet searches). Re-calculate your trajectory and you should see that change. Last, Ballistics AE is just one of several apps that do this. I'm sure there are some threads around here talking about the relative merits of one app over another, but there are several good ones. [/QUOTE]
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Zero for big elevation change
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