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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
G1 vs G7 Drag For Long Range Bullets
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<blockquote data-quote="gebhardt02" data-source="post: 718168" data-attributes="member: 12695"><p>The G7 standard more closely resembles modern bullets (pointy tips and boat tails) than the G1 standard and thus the drag curves are a better match. You can get the job done with the G1 BC's but as Joe King said, you'll want to utilize the different BC's for stepped velocity boundaries. If you have a program that'll accept G7's, then you can basically just use that one number as provided above. Given the choice between the two BC values, the G7 is a better model. If you are stuck using the G1's, it'll work best to set it up with the different BC's for different velocities. And I second the recommendationon Litz's book, I have it sitting in front of me right now. Good luck.</p><p> </p><p>Geb</p></blockquote><p></p>
[QUOTE="gebhardt02, post: 718168, member: 12695"] The G7 standard more closely resembles modern bullets (pointy tips and boat tails) than the G1 standard and thus the drag curves are a better match. You can get the job done with the G1 BC's but as Joe King said, you'll want to utilize the different BC's for stepped velocity boundaries. If you have a program that'll accept G7's, then you can basically just use that one number as provided above. Given the choice between the two BC values, the G7 is a better model. If you are stuck using the G1's, it'll work best to set it up with the different BC's for different velocities. And I second the recommendationon Litz's book, I have it sitting in front of me right now. Good luck. Geb [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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G1 vs G7 Drag For Long Range Bullets
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