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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Software Development Request
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<blockquote data-quote="Mikecr" data-source="post: 417088" data-attributes="member: 1521"><p>Ok, a few problems with this argument;</p><p>1. It's probably better for another thread</p><p>2. Wind doesn't 'push' bullets anymore than rain 'wettens' bullets. With this, wind calculations are not based on TOF, but instead on TIME LAG. And these calcs can be performed from yard to yard as well as muzzle to target. YOUR argument suggests that very heavy bullets would drift more in a given wind because their TOF is higher due to lower MV. This is not true -because their lag time is lower, because their BC is higher. Heavy higher BC bullets, launched slower, drift LESS given enough range to demonstrate. And the majority of their drift(in moa) still occurs right where lag time is highest(nearest the muzzle).</p><p>3. Actual BC does not decrease as a bullet slows. </p><p>The changes in BC you notice result only with comparing actual/local drag coefficients to G1 or G7 standard drag coefficients. This is neccessary for software that makes this comparison. Not so with software that doesn't. I assure you, with your bullet's ACTUAL drag curve referenced by your software, BC would remain constant with velocity. Pejsa manages this feat with a coefficient adjustment.</p><p>As well I'll assure you that drag itself decreases with dropping velocity.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 417088, member: 1521"] Ok, a few problems with this argument; 1. It's probably better for another thread 2. Wind doesn't 'push' bullets anymore than rain 'wettens' bullets. With this, wind calculations are not based on TOF, but instead on TIME LAG. And these calcs can be performed from yard to yard as well as muzzle to target. YOUR argument suggests that very heavy bullets would drift more in a given wind because their TOF is higher due to lower MV. This is not true -because their lag time is lower, because their BC is higher. Heavy higher BC bullets, launched slower, drift LESS given enough range to demonstrate. And the majority of their drift(in moa) still occurs right where lag time is highest(nearest the muzzle). 3. Actual BC does not decrease as a bullet slows. The changes in BC you notice result only with comparing actual/local drag coefficients to G1 or G7 standard drag coefficients. This is neccessary for software that makes this comparison. Not so with software that doesn't. I assure you, with your bullet's ACTUAL drag curve referenced by your software, BC would remain constant with velocity. Pejsa manages this feat with a coefficient adjustment. As well I'll assure you that drag itself decreases with dropping velocity. [/QUOTE]
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New Software Development Request
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