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The Basics, Starting Out
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<blockquote data-quote="WildRose" data-source="post: 1493831" data-attributes="member: 30902"><p>BC comes into play as soon as the round leaves the barrel. Worse, it degrades as velocity drops. There is no bullet stable from max V to transonic so it can make a very big difference how and at what range your BC is measured.</p><p></p><p>My guess is that there's other factors involved here such as using the wrong G1 instead of G3 or G7 BC or that your chrony has a significant error or both.</p><p></p><p>The other factor that could be screwing things up in altitude and pressure.</p></blockquote><p></p>
[QUOTE="WildRose, post: 1493831, member: 30902"] BC comes into play as soon as the round leaves the barrel. Worse, it degrades as velocity drops. There is no bullet stable from max V to transonic so it can make a very big difference how and at what range your BC is measured. My guess is that there's other factors involved here such as using the wrong G1 instead of G3 or G7 BC or that your chrony has a significant error or both. The other factor that could be screwing things up in altitude and pressure. [/QUOTE]
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