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Hunting
Long Range Hunting & Shooting
Was all good but today shooting low?
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<blockquote data-quote="Engineering101" data-source="post: 965655" data-attributes="member: 63138"><p>bigcat_hunter</p><p> </p><p>If you know the velocity is correct you change the BC not the velocity. If you change the velocity your time to impact will be wrong as will the kinetic energy you are dumping into your target as will the terminal velocity. All more important to know that some three digit number that you don't otherwise use.</p><p> </p><p>Do you know your chrono is giving good data? How do you align it? Any misalignment in either pitch or yaw will cause it to read low. To quantify that, 10 degrees misalignment in both pitch and yaw will cause it to read a bullet going 3,000 fps as 2,900 fps.</p><p> </p><p>Also, why so slow? I'm running the same bullet 300 fps faster.</p></blockquote><p></p>
[QUOTE="Engineering101, post: 965655, member: 63138"] bigcat_hunter If you know the velocity is correct you change the BC not the velocity. If you change the velocity your time to impact will be wrong as will the kinetic energy you are dumping into your target as will the terminal velocity. All more important to know that some three digit number that you don't otherwise use. Do you know your chrono is giving good data? How do you align it? Any misalignment in either pitch or yaw will cause it to read low. To quantify that, 10 degrees misalignment in both pitch and yaw will cause it to read a bullet going 3,000 fps as 2,900 fps. Also, why so slow? I'm running the same bullet 300 fps faster. [/QUOTE]
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Was all good but today shooting low?
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