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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Higher than normal?
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<blockquote data-quote="outofayr" data-source="post: 356000" data-attributes="member: 13568"><p>I've also seen this once a couple years ago with my Shooting Chrony - you didn't mention what brand yours was? It was on the order of 200 fps high. Next time out, it was back to normal. </p><p> </p><p>May have been the light, but it may also have been the chrony maybe wasn't opened up all the way so that it was flat. This would shorten the distance between the two "windows", thus causing a shorter time of flight between the start and stop windows. The chrony computes fps by using a fixed distance, so a shorter distance = higher velocity. </p><p> </p><p>Since that time, I'm anal about making certain the chrony is FULLY opened and flat, and haven't had that problem again...</p><p> </p><p>Hope this helps,</p><p>Brian</p></blockquote><p></p>
[QUOTE="outofayr, post: 356000, member: 13568"] I've also seen this once a couple years ago with my Shooting Chrony - you didn't mention what brand yours was? It was on the order of 200 fps high. Next time out, it was back to normal. May have been the light, but it may also have been the chrony maybe wasn't opened up all the way so that it was flat. This would shorten the distance between the two "windows", thus causing a shorter time of flight between the start and stop windows. The chrony computes fps by using a fixed distance, so a shorter distance = higher velocity. Since that time, I'm anal about making certain the chrony is FULLY opened and flat, and haven't had that problem again... Hope this helps, Brian [/QUOTE]
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Higher than normal?
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