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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Loadbase 3.0 and Exbal
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<blockquote data-quote="Mikecr" data-source="post: 421214" data-attributes="member: 1521"><p>My version of Exbal is atleast a 'classic', and possibly an antique by now...</p><p>But it appears the later versions do include coriolis and spindrift(in PPC ersion). I thought by now they would have G7 BC input. Doesn't seem so though.</p><p></p><p>Eaglet, I think you slightly misrepresent ballistic software's lookup of drag coefficients to mach#. </p><p>Neither G1, nor G7 drag curves actually match our bullets, and so they both vary by velocity.</p><p>The variance is smaller across a wide band with G7 because our bullet's actual drag coefficients are closer to G7 than G1. </p><p>But not matching..</p><p>With ****** rate adjustments afforded by LB and Pejsa, a custom/internal drag curve can be built that is even better than G7.</p><p>Anyway, you're right about G7 producing better results across a full range of distances, and why that is so. I applaud Pejsa's approach to 'fixing' G1 BC disparities, and glad it's built into LB. Of course, we should also recognize the resultful efforts of Bryan Litz contributing to wider-spread implementation of G7, coriolis, and spindrift.</p><p></p><p>Field ballistic solutions are advancing daily now. It's fantastic.</p><p>I see us eeking toward standards we'll soon be so much better with.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 421214, member: 1521"] My version of Exbal is atleast a 'classic', and possibly an antique by now... But it appears the later versions do include coriolis and spindrift(in PPC ersion). I thought by now they would have G7 BC input. Doesn't seem so though. Eaglet, I think you slightly misrepresent ballistic software's lookup of drag coefficients to mach#. Neither G1, nor G7 drag curves actually match our bullets, and so they both vary by velocity. The variance is smaller across a wide band with G7 because our bullet's actual drag coefficients are closer to G7 than G1. But not matching.. With ****** rate adjustments afforded by LB and Pejsa, a custom/internal drag curve can be built that is even better than G7. Anyway, you're right about G7 producing better results across a full range of distances, and why that is so. I applaud Pejsa's approach to 'fixing' G1 BC disparities, and glad it's built into LB. Of course, we should also recognize the resultful efforts of Bryan Litz contributing to wider-spread implementation of G7, coriolis, and spindrift. Field ballistic solutions are advancing daily now. It's fantastic. I see us eeking toward standards we'll soon be so much better with. [/QUOTE]
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Loadbase 3.0 and Exbal
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