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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballastic Calculator or App?
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<blockquote data-quote="AZShooter" data-source="post: 1734764" data-attributes="member: 5219"><p>Been using JBM on line program for years. I have gotten outputs that were correct (enough?) use the dial up values and wind drift to shoot out to 500M with certainty and repeatability. </p><p></p><p> Recently got the Ballistics AE app on my phone. There were some discrepancies between the two programs. </p><p></p><p>Ballistics AE requires more input data. One I missed was correction for a scope using MOA. The default setting is 1 for elevation and windage. It requires "trueing" of the scope's performance. I would have thought the default setting would be what a true MOA scope would do which is 1.047". You must input 1.047 for a more accurate output. Doing that helped align the two programs. </p><p></p><p>The wind configuration is a very different manipulation when compared to the internet JBM and allows for all sorts of inputs. </p><p></p><p>Another input called spin and stability must be done. Need to know bullet length as well as barrel twist rate. </p><p></p><p>While Coriolis input is there I have not tried to input my location. </p><p></p><p>Still getting some discrepancies between JBM and Ballistics AE with wind drift and drops/comeups but at least the values are close to one another after figuring out some of the more complicated inputs. Once past around 600 yds the two programs diverge slightly in comeups. Drift with begins to diverge at just past 200 yds. </p><p></p><p>I might still be missing some details not sure. Anyone find anything that would true up the two programs? </p><p> </p><p></p><p>Having the ability to manipulate the inputs in the field in areas where you cannot get internet connection is great. I coues wt hunt in a variety of elevations so there are three elevations in the Ballistics AE favorites for my rifle. </p><p></p><p></p><p>I have not had a chance to try the Ballistics AE at my long distance range yet. Quite frankly when shooting out to 500m the differences are so small that I probably won't notice the difference. </p><p></p><p>Anyone else notice variations between the two programs?</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1734764, member: 5219"] Been using JBM on line program for years. I have gotten outputs that were correct (enough?) use the dial up values and wind drift to shoot out to 500M with certainty and repeatability. Recently got the Ballistics AE app on my phone. There were some discrepancies between the two programs. Ballistics AE requires more input data. One I missed was correction for a scope using MOA. The default setting is 1 for elevation and windage. It requires "trueing" of the scope's performance. I would have thought the default setting would be what a true MOA scope would do which is 1.047". You must input 1.047 for a more accurate output. Doing that helped align the two programs. The wind configuration is a very different manipulation when compared to the internet JBM and allows for all sorts of inputs. Another input called spin and stability must be done. Need to know bullet length as well as barrel twist rate. While Coriolis input is there I have not tried to input my location. Still getting some discrepancies between JBM and Ballistics AE with wind drift and drops/comeups but at least the values are close to one another after figuring out some of the more complicated inputs. Once past around 600 yds the two programs diverge slightly in comeups. Drift with begins to diverge at just past 200 yds. I might still be missing some details not sure. Anyone find anything that would true up the two programs? Having the ability to manipulate the inputs in the field in areas where you cannot get internet connection is great. I coues wt hunt in a variety of elevations so there are three elevations in the Ballistics AE favorites for my rifle. I have not had a chance to try the Ballistics AE at my long distance range yet. Quite frankly when shooting out to 500m the differences are so small that I probably won't notice the difference. Anyone else notice variations between the two programs? [/QUOTE]
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Ballastic Calculator or App?
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