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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Wind and it's affects?
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<blockquote data-quote="groper" data-source="post: 417360" data-attributes="member: 12550"><p>thankyou phorwarth, an interesting read. i now understand why the wind has more effect at the muzzle now.</p><p></p><p>From the sierra reasoning, it would seem to me that the muzzle or 'near wind' has the greatest effect because the bullet aligns its axis with its "trajectory relative to the air" which of course is at a slight angle compared to its trajectory "relative to the ground". This makes sense, and you can observe this phenomenon when a aircraft lands in strong crosswinds, they come in a little sideways.</p><p></p><p>Then, if the wind direction were to change further down range, the bullets axis or angle has already been established at the muzzle and already causing drift velocity sideways, the gyroscopic forces of the rapidly spinning bullet resist significant changes in drift until the angle of the bullet can realign itself with the new wind direction.</p><p></p><p>I also got this out of it.... if your shooting long range in a strong crosswind from left to right, add an extra click of elevation. If your shooting in a strong crosswind from right to left, subtract 1 click of elevation. Happy days <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="groper, post: 417360, member: 12550"] thankyou phorwarth, an interesting read. i now understand why the wind has more effect at the muzzle now. From the sierra reasoning, it would seem to me that the muzzle or 'near wind' has the greatest effect because the bullet aligns its axis with its "trajectory relative to the air" which of course is at a slight angle compared to its trajectory "relative to the ground". This makes sense, and you can observe this phenomenon when a aircraft lands in strong crosswinds, they come in a little sideways. Then, if the wind direction were to change further down range, the bullets axis or angle has already been established at the muzzle and already causing drift velocity sideways, the gyroscopic forces of the rapidly spinning bullet resist significant changes in drift until the angle of the bullet can realign itself with the new wind direction. I also got this out of it.... if your shooting long range in a strong crosswind from left to right, add an extra click of elevation. If your shooting in a strong crosswind from right to left, subtract 1 click of elevation. Happy days :D [/QUOTE]
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Wind and it's affects?
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