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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Powder thermal sensitivity
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<blockquote data-quote="paul scrobohaci" data-source="post: 2949696" data-attributes="member: 112087"><p>Below is the measurement data graph.</p><p>MV was measured with a labradar.</p><p></p><p>Blue dots/lines are for measured data.</p><p>The confidence intervals correspond to the extreme spread in measurement for both MV and temp.</p><p>I measured the temp with a thermocouple directly on the brass before chambering it.</p><p>I kept the rounds in metallic boxes inside the heating/cooling units.</p><p></p><p>The red line is my eye-balled regression through the data which indicates a slope of ~0.33 FPS / (deg-F).</p><p></p><p>The numbers of measured shots for each datapoint starting from low temp were (4, 4, 2, 4, 5, 4, 4)</p><p></p><p></p><p>[ATTACH=full]511804[/ATTACH]</p></blockquote><p></p>
[QUOTE="paul scrobohaci, post: 2949696, member: 112087"] Below is the measurement data graph. MV was measured with a labradar. Blue dots/lines are for measured data. The confidence intervals correspond to the extreme spread in measurement for both MV and temp. I measured the temp with a thermocouple directly on the brass before chambering it. I kept the rounds in metallic boxes inside the heating/cooling units. The red line is my eye-balled regression through the data which indicates a slope of ~0.33 FPS / (deg-F). The numbers of measured shots for each datapoint starting from low temp were (4, 4, 2, 4, 5, 4, 4) [ATTACH type="full"]511804[/ATTACH] [/QUOTE]
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Powder thermal sensitivity
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