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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A decent spindrift formula
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<blockquote data-quote="Michael Eichele" data-source="post: 29304" data-attributes="member: 1007"><p>Theories on spin drift,</p><p></p><p>Please don't criticize anything here as this is all theory and opinion and not necessarily fact. </p><p></p><p>Does anybody even have true calcs for spin drift?? Or known calculations? If you think about it SOME of the calcs would have to include the bullets stability factor and distance. Calcs for the stability factor includes atmospheric conditions, twist, velocity, and total bullet design, bullet construction and even the type of materials used. </p><p></p><p>If spin drift is a result of the bullet being angled slightly to the left or right depending on twist direction due to gyroscopic stability, or yaw of response, wouldn't the bullets stability factor be necessary to give accurate calculations? If the bullet was being spun faster than necessary, wouldn't that increase the spin drift? If the bullet didn't spin, it wouldn't move to the left or the right, right? </p><p></p><p>Something to think about.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 29304, member: 1007"] Theories on spin drift, Please don’t criticize anything here as this is all theory and opinion and not necessarily fact. Does anybody even have true calcs for spin drift?? Or known calculations? If you think about it SOME of the calcs would have to include the bullets stability factor and distance. Calcs for the stability factor includes atmospheric conditions, twist, velocity, and total bullet design, bullet construction and even the type of materials used. If spin drift is a result of the bullet being angled slightly to the left or right depending on twist direction due to gyroscopic stability, or yaw of response, wouldn’t the bullets stability factor be necessary to give accurate calculations? If the bullet was being spun faster than necessary, wouldn’t that increase the spin drift? If the bullet didn’t spin, it wouldn’t move to the left or the right, right? Something to think about. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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A decent spindrift formula
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