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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
SD, or ifSD?
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<blockquote data-quote="J E Custom" data-source="post: 816262" data-attributes="member: 2736"><p>I think you mean BC (Ballistic Coefficient) Instead of SD (Standard deviation).</p><p></p><p>There is a formula for BCs (G1 and G7) that works best for calculating Ballistic Coefficient based on bullet shape and type.</p><p></p><p>SDs are based on velocity averages and extreme spread.</p><p></p><p>Bryan Litz has a great book on Applied ballistics that will help you understand external Ballistics</p><p>better and will answer most if not all questions. (Not that I understand all there is to it, but it has helped me a great deal).</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 816262, member: 2736"] I think you mean BC (Ballistic Coefficient) Instead of SD (Standard deviation). There is a formula for BCs (G1 and G7) that works best for calculating Ballistic Coefficient based on bullet shape and type. SDs are based on velocity averages and extreme spread. Bryan Litz has a great book on Applied ballistics that will help you understand external Ballistics better and will answer most if not all questions. (Not that I understand all there is to it, but it has helped me a great deal). J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
SD, or ifSD?
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