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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Is faster better?
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<blockquote data-quote="Hugnot" data-source="post: 2225017" data-attributes="member: 115658"><p>Take a look at pages 164-170 of the Berger 1st edition load manual - Form Factors. Page 167 - some bullets may have equal BC's but different form factors (different drag profiles) & higher velocities may be realized with the lighter bullet. One of my favorite bullets is the 6mm 95 Berger VLD & I can get this going real fast from my 6mm-06, 8 twist. Another bullet is the 6mm 87 V-Max® and this does amazingly well despite its modest BC (G1 at about .42) at extended ranges when launched at over 3550 fps. </p><p></p><p>I learned the ® business from this forum.</p><p></p><p>Page 165 Berger manual, BC (G7) = SD/Form Factor or Form Factor = SD/BC(G7) look for long pointy bullets that have BC's higher than SD's</p><p></p><p>Low form factors are nicer than hi form factors. </p><p></p><p>BC's being G7 & SD = sectional density</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2225017, member: 115658"] Take a look at pages 164-170 of the Berger 1st edition load manual - Form Factors. Page 167 - some bullets may have equal BC's but different form factors (different drag profiles) & higher velocities may be realized with the lighter bullet. One of my favorite bullets is the 6mm 95 Berger VLD & I can get this going real fast from my 6mm-06, 8 twist. Another bullet is the 6mm 87 V-Max® and this does amazingly well despite its modest BC (G1 at about .42) at extended ranges when launched at over 3550 fps. I learned the ® business from this forum. Page 165 Berger manual, BC (G7) = SD/Form Factor or Form Factor = SD/BC(G7) look for long pointy bullets that have BC's higher than SD's Low form factors are nicer than hi form factors. BC's being G7 & SD = sectional density [/QUOTE]
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