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Hunting
Long Range Hunting & Shooting
Powder temp and case insulation?
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<blockquote data-quote="EXPRESS" data-source="post: 1188900" data-attributes="member: 1441"><p>Yestrday I ran a temp test with the Magnetospeed.</p><p></p><p>First I left the rifle, kestrel and ammo outside, in the shade for a couple of hours. It was 18C which is nice mild spring day. </p><p>Got 2970fps avg.</p><p></p><p>Then I stuck the gear into my walk in chiller for a couple of hours. It was 4C which is pretty cold cold.</p><p>I quickly set up and fired three shots.</p><p>Got 2950fps avg.</p><p></p><p>So it seems the powder is sensitive by 1.6fps per 1C, which seems ok. I want to try it at around 30C which is a hot day, and also around -10 and see if the variation maintains linearity.</p><p></p><p>I just have to test drops now and find out where the error in my numbers was.</p><p></p><p>Wildrose, best of luck mate.</p></blockquote><p></p>
[QUOTE="EXPRESS, post: 1188900, member: 1441"] Yestrday I ran a temp test with the Magnetospeed. First I left the rifle, kestrel and ammo outside, in the shade for a couple of hours. It was 18C which is nice mild spring day. Got 2970fps avg. Then I stuck the gear into my walk in chiller for a couple of hours. It was 4C which is pretty cold cold. I quickly set up and fired three shots. Got 2950fps avg. So it seems the powder is sensitive by 1.6fps per 1C, which seems ok. I want to try it at around 30C which is a hot day, and also around -10 and see if the variation maintains linearity. I just have to test drops now and find out where the error in my numbers was. Wildrose, best of luck mate. [/QUOTE]
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Powder temp and case insulation?
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