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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need help troubleshooting 300 RUM pressure issue.
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<blockquote data-quote="Kiwi Greg" data-source="post: 908756" data-attributes="member: 13456"><p>I got this for capacities, NF is not fired, F is fired</p><p> </p><p> </p><p>Norma 338 ED 289.7 case 111.7 water NF</p><p> </p><p>Norma 338 ED 290.4 case 115.6 water F</p><p> </p><p>Nosler 338 ED 289.1 case 115.8 water F</p><p> </p><p>Federal 338 ED 279.4 case 116.0 water F</p><p> </p><p>Bertram 338 ED 288.3 case 114.6 water F</p><p> </p><p>Rem 338 ED 274.9 case 116.9 water F</p><p> </p><p>From the brass I compared the RP was the biggest inside.</p><p> </p><p>If I ran the same amount of powder in the Bertram & RP the BB would be looking sad & the RP not, having said that the Bertram pocket will be tighter than the RP, that is to do with the size/diameter of the head I believe. </p><p> </p><p>They all expand to the same size on firing with a decent load. </p><p> </p><p>The FC was the smallest so it expanded the most, 0.0045" IIRC & let the primers go real early. </p><p> </p><p>The BB was the biggest so expanded the least 0.0015" IIRC so the pockets were tight.</p><p> </p><p>I found the BB pockets should basically last for ever, but to get the velocity of the RP (which won't last forever) I needed be punishing the head & shaving brass where as it won't be doing that to the RP.</p><p> </p><p>The best thing to do would be to test it yourself in your rifle to see what you think <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p> </p><p>I don't have my data on me at the moment sorry.</p></blockquote><p></p>
[QUOTE="Kiwi Greg, post: 908756, member: 13456"] I got this for capacities, NF is not fired, F is fired Norma 338 ED 289.7 case 111.7 water NF Norma 338 ED 290.4 case 115.6 water F Nosler 338 ED 289.1 case 115.8 water F Federal 338 ED 279.4 case 116.0 water F Bertram 338 ED 288.3 case 114.6 water F Rem 338 ED 274.9 case 116.9 water F From the brass I compared the RP was the biggest inside. If I ran the same amount of powder in the Bertram & RP the BB would be looking sad & the RP not, having said that the Bertram pocket will be tighter than the RP, that is to do with the size/diameter of the head I believe. They all expand to the same size on firing with a decent load. The FC was the smallest so it expanded the most, 0.0045" IIRC & let the primers go real early. The BB was the biggest so expanded the least 0.0015" IIRC so the pockets were tight. I found the BB pockets should basically last for ever, but to get the velocity of the RP (which won't last forever) I needed be punishing the head & shaving brass where as it won't be doing that to the RP. The best thing to do would be to test it yourself in your rifle to see what you think :-) I don't have my data on me at the moment sorry. [/QUOTE]
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Need help troubleshooting 300 RUM pressure issue.
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