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Rifles, Reloading, Optics, Equipment
Reloading
Temp sensitivity
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<blockquote data-quote="azsugarbear" data-source="post: 796736" data-attributes="member: 4809"><p>Testing the temp of powder is probably a misnomer, as Bart B pointed out. But I suspect the relationship between the temp of a brass casing and that of the powder move together in the same direction with some strong correlation. </p><p></p><p>As long as you are consistent in measuring the temp of the brass, you have a standard against which you can record changes in velocity. Hodgden Extreme powders seem to do much better than others, but velocities still change. Here in AZ, I have found that as you move closer to the 90 -100 degree mark, the more pronounced that change becomes. I have a load for my 6.5-06 that does quite well at 50-70 degrees. But at 90 degrees, I get substantial pressure signs.</p><p></p><p>Being aware of your ammo temp and knowing how it behaves in different temps and conditions - allows you to compensate.</p></blockquote><p></p>
[QUOTE="azsugarbear, post: 796736, member: 4809"] Testing the temp of powder is probably a misnomer, as Bart B pointed out. But I suspect the relationship between the temp of a brass casing and that of the powder move together in the same direction with some strong correlation. As long as you are consistent in measuring the temp of the brass, you have a standard against which you can record changes in velocity. Hodgden Extreme powders seem to do much better than others, but velocities still change. Here in AZ, I have found that as you move closer to the 90 -100 degree mark, the more pronounced that change becomes. I have a load for my 6.5-06 that does quite well at 50-70 degrees. But at 90 degrees, I get substantial pressure signs. Being aware of your ammo temp and knowing how it behaves in different temps and conditions - allows you to compensate. [/QUOTE]
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Temp sensitivity
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