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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
SPIN DRIFT!....I'm such a dummy
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<blockquote data-quote="ReachnOut" data-source="post: 463344" data-attributes="member: 28846"><p>No dummy RDM ...... you're probably 1 in 10000 shooters that has ever researched gyroscopic drift and actually know what it is! Fortunately, I trained for many years with the old timers from the long range 'Nam era who incredibly figured all the variables of long range shooting in their heads without the benefit of the iPhone ballistic programs that I use today. Ask someone today to read a mirage and watch them get a blank look.</p><p></p><p>Actually, it's kind of fun to play around with "spin drift". If you have the range that will accommodate it shooting a 3 shot group every 100 yds from 4 on out really emphasizes the whole drift phenomenon. I've found that if you limit the test to a zero wind day that each rifle and the same rifle with different bullet weights make a significant difference. For my "money gun" on friendly hunting shots or ringing the bell out to 1k the actual drift is 1.5" every hundred past 400. Most of the time I figure my wind, add or subtract the drift depending upon wind direction and let 'er rip.</p></blockquote><p></p>
[QUOTE="ReachnOut, post: 463344, member: 28846"] No dummy RDM ...... you're probably 1 in 10000 shooters that has ever researched gyroscopic drift and actually know what it is! Fortunately, I trained for many years with the old timers from the long range 'Nam era who incredibly figured all the variables of long range shooting in their heads without the benefit of the iPhone ballistic programs that I use today. Ask someone today to read a mirage and watch them get a blank look. Actually, it's kind of fun to play around with "spin drift". If you have the range that will accommodate it shooting a 3 shot group every 100 yds from 4 on out really emphasizes the whole drift phenomenon. I've found that if you limit the test to a zero wind day that each rifle and the same rifle with different bullet weights make a significant difference. For my "money gun" on friendly hunting shots or ringing the bell out to 1k the actual drift is 1.5" every hundred past 400. Most of the time I figure my wind, add or subtract the drift depending upon wind direction and let 'er rip. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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SPIN DRIFT!....I'm such a dummy
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