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Rifles, Reloading, Optics, Equipment
Reloading
BC
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<blockquote data-quote="Bart B" data-source="post: 783085" data-attributes="member: 5302"><p>I don't trust any single BC number for a bullet. 'Tis been proved by chronograph testing time of flights that there can be as many as 5 or 6 BC's for a given bullet in as many velocity bands. Drag's not the same at all speeds through the air for a given bullet. </p><p></p><p>G7 numbers make it easy to use.</p><p></p><p>G1 numbers, such as those used by Sierra Bullets which are several for a given bullet, are more accurate.</p><p></p><p>Use which ones you want to.</p></blockquote><p></p>
[QUOTE="Bart B, post: 783085, member: 5302"] I don't trust any single BC number for a bullet. 'Tis been proved by chronograph testing time of flights that there can be as many as 5 or 6 BC's for a given bullet in as many velocity bands. Drag's not the same at all speeds through the air for a given bullet. G7 numbers make it easy to use. G1 numbers, such as those used by Sierra Bullets which are several for a given bullet, are more accurate. Use which ones you want to. [/QUOTE]
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