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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="MagnumManiac" data-source="post: 2109560" data-attributes="member: 10755"><p>You are correct in your summation.</p><p>The reason some powders are listed with lower max pressures is due to them being erratic at max pressure and a slight increase in powder causes a way over max pressure event.</p><p>Also, double base powders produce more energy for a given weight and become unstable as heat and pressure get beyond their max threshold. This can cause a normal pressure load to go sky high in the heat of summer or if the rounds have been exposed to a heat source...I found this out here in Australia and it ruined my paid hunt with a rifle with a bolt locked solid.</p><p>RE22 was the culprit. Swollen case head, no primer was ever found and the bolt face was torched. Had to bash the bolt open and then bash it rearward to extract the case, luckily it was a CRF action and not a Rem 700!</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2109560, member: 10755"] You are correct in your summation. The reason some powders are listed with lower max pressures is due to them being erratic at max pressure and a slight increase in powder causes a way over max pressure event. Also, double base powders produce more energy for a given weight and become unstable as heat and pressure get beyond their max threshold. This can cause a normal pressure load to go sky high in the heat of summer or if the rounds have been exposed to a heat source...I found this out here in Australia and it ruined my paid hunt with a rifle with a bolt locked solid. RE22 was the culprit. Swollen case head, no primer was ever found and the bolt face was torched. Had to bash the bolt open and then bash it rearward to extract the case, luckily it was a CRF action and not a Rem 700! Cheers. [/QUOTE]
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