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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I’m always busy at the wrong time…for SCIENCE!!!😡🤣. Anyone ever shoot at these temps and get chrono numbers?
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<blockquote data-quote="Veteran" data-source="post: 2713141" data-attributes="member: 118038"><p>Yep, that's the burn rate of your powder being affected by cold.</p><p></p><p>It works the other way in 100 degrees, but is not even linear and can get you blown up. I shot some handloads that were developed in 70 degrees in Michigan that shot about 2950 to 3000 fps for 250 gr</p><p>.338 Lapua.....same rounds in August in Texas scared me when the chrono said 3400. I quit immediately. That was w RL 26.</p><p>On the hot end of the curve, burn rate vs. temperature, the burn rate can turn up exponentially, and is no longer linear.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2713141, member: 118038"] Yep, that's the burn rate of your powder being affected by cold. It works the other way in 100 degrees, but is not even linear and can get you blown up. I shot some handloads that were developed in 70 degrees in Michigan that shot about 2950 to 3000 fps for 250 gr .338 Lapua.....same rounds in August in Texas scared me when the chrono said 3400. I quit immediately. That was w RL 26. On the hot end of the curve, burn rate vs. temperature, the burn rate can turn up exponentially, and is no longer linear. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
I’m always busy at the wrong time…for SCIENCE!!!😡🤣. Anyone ever shoot at these temps and get chrono numbers?
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