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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ballistic coefficients?
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<blockquote data-quote="MAX" data-source="post: 27963" data-attributes="member: 184"><p>Jeff & Brent, thanks for your comments. My recollection is that the projectile used for establishing the G1 was a 1" X 1 lb form with a tangent ogive of 1-2 calibers.</p><p></p><p>For a reality check on my part, would not BC comparisons based on different G functions be an apple/orange thing? The G1 form is...crude, from an aerodynamic perspective. BC calculation is part weight, part form, so if you're on the wrong "scale" does the data have any particular validity? This was the point that Jameison was making I think. </p><p></p><p>The mention above regarding changing BC's(Seen in the Sierra Manual also), and some other comments I see from time to time are making me appreciate the Coeficient of Drag approach used by the 'Aeroballisticians', as McCoy called himself and his peers.</p></blockquote><p></p>
[QUOTE="MAX, post: 27963, member: 184"] Jeff & Brent, thanks for your comments. My recollection is that the projectile used for establishing the G1 was a 1" X 1 lb form with a tangent ogive of 1-2 calibers. For a reality check on my part, would not BC comparisons based on different G functions be an apple/orange thing? The G1 form is...crude, from an aerodynamic perspective. BC calculation is part weight, part form, so if you're on the wrong "scale" does the data have any particular validity? This was the point that Jameison was making I think. The mention above regarding changing BC's(Seen in the Sierra Manual also), and some other comments I see from time to time are making me appreciate the Coeficient of Drag approach used by the 'Aeroballisticians', as McCoy called himself and his peers. [/QUOTE]
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