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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A tale of two chrony's
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<blockquote data-quote="MontanaRifleman" data-source="post: 344880" data-attributes="member: 11717"><p>Interesting post Mike. I've run across the same thing. My two chrony's being off anywhere from 5 to 50 fps. I dont think they are even good for SD's or ES's. They might distinguish higher ES's from lower ES's to some degree, but I take them with a big grain of salt.</p><p> </p><p>I'm not sure a third chrony would tell you which is right, unless it was a really good one like an Oehler. If you had three ordinary chrony's you would likely have three inaccurate chrony's. And I've seen them act different on different days.</p><p> </p><p>How sure where you of your zero, which I'm assuming you based your drops off? I've read the Leupy's are IPHY and not true MOA, so as already sadi, you need to find out just what your turret is calibrated for.</p><p> </p><p>Drops aren't the most accurate way of measuring, but if you shoot them at regular intervals and measure them, I think you can graph them and get a fairly accurate trajctory to calcualte a velocity off. Just thinking out loud...</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 344880, member: 11717"] Interesting post Mike. I've run across the same thing. My two chrony's being off anywhere from 5 to 50 fps. I dont think they are even good for SD's or ES's. They might distinguish higher ES's from lower ES's to some degree, but I take them with a big grain of salt. I'm not sure a third chrony would tell you which is right, unless it was a really good one like an Oehler. If you had three ordinary chrony's you would likely have three inaccurate chrony's. And I've seen them act different on different days. How sure where you of your zero, which I'm assuming you based your drops off? I've read the Leupy's are IPHY and not true MOA, so as already sadi, you need to find out just what your turret is calibrated for. Drops aren't the most accurate way of measuring, but if you shoot them at regular intervals and measure them, I think you can graph them and get a fairly accurate trajctory to calcualte a velocity off. Just thinking out loud... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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A tale of two chrony's
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