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Rifles, Reloading, Optics, Equipment
7mm STW
Anyone running 180 Bergers over 3100 fps?
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<blockquote data-quote="idaho elk hunter" data-source="post: 1098361" data-attributes="member: 68226"><p>I will tell you this. As long as I have been doing this I have loaded over conservative book loads that are downloaded to very safe levels. </p><p> </p><p>I was OVER book. My barrel is a Broughton 5c 1 in 9 twist. Coal is 3.5 inches the bullet .015 off the lands. Coated with Hex Boron.</p><p> </p><p>The previous original safe loads that were the same loads were somewhat hot. To give a idea of my determination of a "safe" level. They were loaded 4 times loaded was the life span of the brass. Expansion in front of the belt was .02. Primer was starting to flatten but not flat by any means. Loaded to extractor mark was faint on the case head and backed off 2 grains.</p><p> </p><p>All I can think of is some off the Glycerin on the opened can evaporated out in storage causing a burn rate so different than an sealed can. Has anyone else had this experience?</p></blockquote><p></p>
[QUOTE="idaho elk hunter, post: 1098361, member: 68226"] I will tell you this. As long as I have been doing this I have loaded over conservative book loads that are downloaded to very safe levels. I was OVER book. My barrel is a Broughton 5c 1 in 9 twist. Coal is 3.5 inches the bullet .015 off the lands. Coated with Hex Boron. The previous original safe loads that were the same loads were somewhat hot. To give a idea of my determination of a "safe" level. They were loaded 4 times loaded was the life span of the brass. Expansion in front of the belt was .02. Primer was starting to flatten but not flat by any means. Loaded to extractor mark was faint on the case head and backed off 2 grains. All I can think of is some off the Glycerin on the opened can evaporated out in storage causing a burn rate so different than an sealed can. Has anyone else had this experience? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Anyone running 180 Bergers over 3100 fps?
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