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Rifles, Reloading, Optics, Equipment
Reloading
Temperature sensitivity of US869
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<blockquote data-quote="41mag" data-source="post: 128689" data-attributes="member: 3804"><p>meichele,</p><p></p><p>When we tried the temp check, the ambient was pushing close to 98 and we had 100% humidity. We had been load checking a few different powder charges and figured that since we had the drink cooler with us we would try the test. We stuck three rounds in the cooler, for about 30 minutes. After we put them in the cooler, we put three consecutive rounds of the ambient temp loads through the chrono. After letting the barrel cool and the three in the coller reach the ambient temp of the cooler, we fired them through as well. </p><p></p><p>Granted this wasn't too awefully controlled, but it was something that has repeated since the weather has cooled somewhat down this way. </p><p></p><p>Bear in mind, down here where we are shooting it is generally in the 60% humidity levels and we are at most only 170ft above sea level. Our max loads with the 869 or the 872 generally run somewhere in the range of 5 - 9 grs below what most can get, before we start getting pressure signs. Yes we can run the loads up to about 98grs with the 169.5 but then the cases only last about three loads before being trash. </p><p></p><p>Just thought I would throw in what we have found.</p></blockquote><p></p>
[QUOTE="41mag, post: 128689, member: 3804"] meichele, When we tried the temp check, the ambient was pushing close to 98 and we had 100% humidity. We had been load checking a few different powder charges and figured that since we had the drink cooler with us we would try the test. We stuck three rounds in the cooler, for about 30 minutes. After we put them in the cooler, we put three consecutive rounds of the ambient temp loads through the chrono. After letting the barrel cool and the three in the coller reach the ambient temp of the cooler, we fired them through as well. Granted this wasn't too awefully controlled, but it was something that has repeated since the weather has cooled somewhat down this way. Bear in mind, down here where we are shooting it is generally in the 60% humidity levels and we are at most only 170ft above sea level. Our max loads with the 869 or the 872 generally run somewhere in the range of 5 - 9 grs below what most can get, before we start getting pressure signs. Yes we can run the loads up to about 98grs with the 169.5 but then the cases only last about three loads before being trash. Just thought I would throw in what we have found. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Temperature sensitivity of US869
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