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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Chronograph issues?
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<blockquote data-quote="royinidaho" data-source="post: 1075802" data-attributes="member: 2011"><p>I'd suspect chrony setup.</p><p></p><p>When sky is cloud covered (way more white than blue) I don't use the white plastic reflectors.</p><p></p><p>When sky is blue and bright ya gotta use 'em.....</p><p></p><p>When a cloud passes over, with the shot, as compared to no cloud, velocity reading changes.</p><p></p><p>I would also be wise to ensure the chrony is consistently set up parallel with the line of sight of the bore. I noticed "somewhat" better consistency when I gave this more consideration.</p><p></p><p>I'm not too particular about session to session consistency but expect there to be a fairly close relationship between velocities during different shooting sessions.</p><p></p><p>Someone ought to do some calculations of how much difference the distance across the chrony makes with different tilt angles. Just wondering... But not motivated enough to do it myself.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="royinidaho, post: 1075802, member: 2011"] I'd suspect chrony setup. When sky is cloud covered (way more white than blue) I don't use the white plastic reflectors. When sky is blue and bright ya gotta use 'em..... When a cloud passes over, with the shot, as compared to no cloud, velocity reading changes. I would also be wise to ensure the chrony is consistently set up parallel with the line of sight of the bore. I noticed "somewhat" better consistency when I gave this more consideration. I'm not too particular about session to session consistency but expect there to be a fairly close relationship between velocities during different shooting sessions. Someone ought to do some calculations of how much difference the distance across the chrony makes with different tilt angles. Just wondering... But not motivated enough to do it myself.:rolleyes: [/QUOTE]
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Chronograph issues?
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