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Rifles, Reloading, Optics, Equipment
Reloading
Temperature Sensitivity
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<blockquote data-quote="Jim Hundley" data-source="post: 434886" data-attributes="member: 3708"><p>I have been loading my .300 Win. mag. cases with H-1000 because of the temp. insinsitivety of this Extreme powder. However most loads with the longer bullets are quite compressed. I was searching my Quick Load program for alternate powders that would give me the desirable case fill and the targeted velocity. IMR 7828 sc keeps popping up as an ideal candidate. My question : is IMR 7828sc a good powder for the .300 Win. mag / 180 gr. bullets and how much velocity lose can be expected from 75 degrees down to 20 degrees ? Can I figure 2 fps. per degree of temperature less than 70 degrees as a rule of thumb ? The H-1000 does not vary enough to matter, verified with the Oehler 35 in such temps. Any suggestions ?</p><p>Thank you,</p><p>Jim</p></blockquote><p></p>
[QUOTE="Jim Hundley, post: 434886, member: 3708"] I have been loading my .300 Win. mag. cases with H-1000 because of the temp. insinsitivety of this Extreme powder. However most loads with the longer bullets are quite compressed. I was searching my Quick Load program for alternate powders that would give me the desirable case fill and the targeted velocity. IMR 7828 sc keeps popping up as an ideal candidate. My question : is IMR 7828sc a good powder for the .300 Win. mag / 180 gr. bullets and how much velocity lose can be expected from 75 degrees down to 20 degrees ? Can I figure 2 fps. per degree of temperature less than 70 degrees as a rule of thumb ? The H-1000 does not vary enough to matter, verified with the Oehler 35 in such temps. Any suggestions ? Thank you, Jim [/QUOTE]
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Reloading
Temperature Sensitivity
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