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Long Range Hunting & Shooting
7mm lrm
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<blockquote data-quote="Ragnarnar" data-source="post: 1272008" data-attributes="member: 98218"><p>First, no you're not. I based that off same powder and the same bullet in both cases gleaned from load data from multiple sources. </p><p>I'm being honest. I don't own either, so I had to work google on this one. However half a dozen different loads from the internet while not scientific, is pretty indicative. </p><p></p><p> Second, no its not. If your theory was correct the 6BRX would have a massively shorter barrel life than a .243/6xc/6-47 and this is not the case. If you get 1100 rounds from a .243/6xc/6-47 loaded for competition you're lucky. People are reporting barrel lives beyond 2000 with the 6BRX.</p><p>The entire purpose of the 6.5X47 for a parent case was to take advantage of the thicker case head to handle the higher pressures. </p><p>32.5 grains of varget in a BRX generates 55k PSI according to quick load. Thats pretty mild compared to the other options out there. A factory .243 operates at 60K.</p><p></p><p>So even if you were correct, how is using less of a faster powder at a higher PSI to equal the performance of more powder in a longer case and barrel somehow less efficient?</p></blockquote><p></p>
[QUOTE="Ragnarnar, post: 1272008, member: 98218"] First, no you're not. I based that off same powder and the same bullet in both cases gleaned from load data from multiple sources. I'm being honest. I don't own either, so I had to work google on this one. However half a dozen different loads from the internet while not scientific, is pretty indicative. Second, no its not. If your theory was correct the 6BRX would have a massively shorter barrel life than a .243/6xc/6-47 and this is not the case. If you get 1100 rounds from a .243/6xc/6-47 loaded for competition you're lucky. People are reporting barrel lives beyond 2000 with the 6BRX. The entire purpose of the 6.5X47 for a parent case was to take advantage of the thicker case head to handle the higher pressures. 32.5 grains of varget in a BRX generates 55k PSI according to quick load. Thats pretty mild compared to the other options out there. A factory .243 operates at 60K. So even if you were correct, how is using less of a faster powder at a higher PSI to equal the performance of more powder in a longer case and barrel somehow less efficient? [/QUOTE]
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