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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
chrony and sun/overcast
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<blockquote data-quote="specweldtom" data-source="post: 165871" data-attributes="member: 2580"><p>I haven't used a Chrony, does it have a diffuser above the eye? As DB and Roy said, bright clear sunlight makes it harder for the chronograph to "see" the bullet, and the Oehler skyscreen III's have a big translucent orange diffuser above each eye to stop the glare.</p><p></p><p>Unless the processor in the chrono is screwing up, I'd suspect extreme spread on the load. I don't know if the shock wave could rock the screens enough to cause that much deviation without just failing to read. Best I can recall, shock waves, when they read, show around 1300 fps. I set my 1st screen about 7-8 yds. Makes a smaller window to shoot through, but stops most errors. I've never thought about a clear or cloudy day making a difference in the readings. I just figured it would read if it had enough light and wouldn't if it didn't. Another addition to the huge list of stuff that I don't know.</p><p></p><p>I'd like to know what happens when you make the comparisons.</p><p></p><p>Thanks, Tom</p></blockquote><p></p>
[QUOTE="specweldtom, post: 165871, member: 2580"] I haven't used a Chrony, does it have a diffuser above the eye? As DB and Roy said, bright clear sunlight makes it harder for the chronograph to "see" the bullet, and the Oehler skyscreen III's have a big translucent orange diffuser above each eye to stop the glare. Unless the processor in the chrono is screwing up, I'd suspect extreme spread on the load. I don't know if the shock wave could rock the screens enough to cause that much deviation without just failing to read. Best I can recall, shock waves, when they read, show around 1300 fps. I set my 1st screen about 7-8 yds. Makes a smaller window to shoot through, but stops most errors. I've never thought about a clear or cloudy day making a difference in the readings. I just figured it would read if it had enough light and wouldn't if it didn't. Another addition to the huge list of stuff that I don't know. I'd like to know what happens when you make the comparisons. Thanks, Tom [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
chrony and sun/overcast
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