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Rifles, Reloading, Optics, Equipment
Reloading
Truth about Temp. Sensitive Powders
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<blockquote data-quote="Greyfox" data-source="post: 942915" data-attributes="member: 10291"><p>I have had experience with a few powders when dealing with temperature extremes. Using IMR4350 and IMR7828 in temperatures ranging from 20-80 degrees I noted velocity and POI differences of +30 FPS and a few inches at 500 yards. This was the typical variation over a few years using my 270 WSM. Using my 6.5x284 and 300WM rifles with Extreme Retumbo and H4831sc, velocity and POI differences were basically very slight to non existent over the same temperature range. I don't claim my experience to be very scientific, but it's good enough for me to buy into the improved temperature insensitivity of the exteme Hodgdon powders.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 942915, member: 10291"] I have had experience with a few powders when dealing with temperature extremes. Using IMR4350 and IMR7828 in temperatures ranging from 20-80 degrees I noted velocity and POI differences of +30 FPS and a few inches at 500 yards. This was the typical variation over a few years using my 270 WSM. Using my 6.5x284 and 300WM rifles with Extreme Retumbo and H4831sc, velocity and POI differences were basically very slight to non existent over the same temperature range. I don't claim my experience to be very scientific, but it's good enough for me to buy into the improved temperature insensitivity of the exteme Hodgdon powders. [/QUOTE]
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Truth about Temp. Sensitive Powders
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