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Long Range Hunting & Shooting
Why two chronographs
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<blockquote data-quote="kiwi3006" data-source="post: 298922" data-attributes="member: 8927"><p>First off I have never tried to calculate BC from chrono data.</p><p>I think the reason people want to use two is so that you can see the exact velocity loss for that one projectile. </p><p>If you only use one chrono then you would need to have a load that gave minimal ES and fire a resonable number of rounds (10 or more?) to get an average.</p><p>My gut feeling is that the velocity loss from several projectiles will be different so you will need to average them anyway, but you would probably need to fire less rounds.</p><p> </p><p>Stu.</p></blockquote><p></p>
[QUOTE="kiwi3006, post: 298922, member: 8927"] First off I have never tried to calculate BC from chrono data. I think the reason people want to use two is so that you can see the exact velocity loss for that one projectile. If you only use one chrono then you would need to have a load that gave minimal ES and fire a resonable number of rounds (10 or more?) to get an average. My gut feeling is that the velocity loss from several projectiles will be different so you will need to average them anyway, but you would probably need to fire less rounds. Stu. [/QUOTE]
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Why two chronographs
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