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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Calculating drop with head or tail wind?
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<blockquote data-quote="LouBoyd" data-source="post: 315991" data-attributes="member: 9253"><p>Chapter 7 of Robert L. McCoy's "Modern Exterior Ballistics" gives the equations for head and tail winds. It's simply the amount that gravitational drop changes due to the increase or decrease in the time of flight of the bullet to the target,. The effect increases with more than the square of the distance to the target, so it can be significant at long range. </p><p></p><p> Most commercial ballistics programs are based on McCoy's work and included the calculations. To see the effect just run the programs and look at the effect. Also try it with the wind angle a few degrees offset to see what's important.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 315991, member: 9253"] Chapter 7 of Robert L. McCoy's "Modern Exterior Ballistics" gives the equations for head and tail winds. It's simply the amount that gravitational drop changes due to the increase or decrease in the time of flight of the bullet to the target,. The effect increases with more than the square of the distance to the target, so it can be significant at long range. Most commercial ballistics programs are based on McCoy's work and included the calculations. To see the effect just run the programs and look at the effect. Also try it with the wind angle a few degrees offset to see what's important. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Calculating drop with head or tail wind?
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