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Rifles, Reloading, Optics, Equipment
Reloading
Temp stable .270 wsm powder
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<blockquote data-quote="jdavistx" data-source="post: 1950676" data-attributes="member: 89418"><p>I got the table from Predator Masters website and don't have the original source. All you have to do is Google up temp sensitivity for powders. The "50˚ and up" comment means the powder burn rate is non-linear under that temp so the estimate of 1.52 for RL15 under 50˚ is not accurate.</p><p></p><p>If you know the temp, you can enter that into your ballistics calculator via a MV/TEMP chart as a starting point. Then see what you get on the range. I'm not recommending a particular powder here. Just trying to help ppl understand the importance of factoring in burn rate over temp. If you know that, I think it helps a lot at long range under large temp variations.</p></blockquote><p></p>
[QUOTE="jdavistx, post: 1950676, member: 89418"] I got the table from Predator Masters website and don't have the original source. All you have to do is Google up temp sensitivity for powders. The "50˚ and up" comment means the powder burn rate is non-linear under that temp so the estimate of 1.52 for RL15 under 50˚ is not accurate. If you know the temp, you can enter that into your ballistics calculator via a MV/TEMP chart as a starting point. Then see what you get on the range. I'm not recommending a particular powder here. Just trying to help ppl understand the importance of factoring in burn rate over temp. If you know that, I think it helps a lot at long range under large temp variations. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Temp stable .270 wsm powder
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