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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cold weather load development
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<blockquote data-quote="Pdvdh" data-source="post: 584859" data-attributes="member: 4191"><p>I think barrel temp is pertinent issue also. When I chronograph loads at variable temperatures in the effort to determine MV variation versus temperature, I sometimes load the rifle and place it in the freezer overnight to collect an ~0F MV reading. Pull it out of the freezer and then fire across the chronographs within 30 seconds of pulling the rifle from the freezer - before too much condensation forms on the rifle barrel and bore.</p><p></p><p>Beyond that specific matter, some powders are clearly more temperature sensitive than others, based on the chronographing I've conducted across the 75F to 0F temperature range.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 584859, member: 4191"] I think barrel temp is pertinent issue also. When I chronograph loads at variable temperatures in the effort to determine MV variation versus temperature, I sometimes load the rifle and place it in the freezer overnight to collect an ~0F MV reading. Pull it out of the freezer and then fire across the chronographs within 30 seconds of pulling the rifle from the freezer - before too much condensation forms on the rifle barrel and bore. Beyond that specific matter, some powders are clearly more temperature sensitive than others, based on the chronographing I've conducted across the 75F to 0F temperature range. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Cold weather load development
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