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Long Range Hunting & Shooting
6.5 Credmoor vs 7mm-08
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<blockquote data-quote="toddc" data-source="post: 1261497" data-attributes="member: 4566"><p>Maybe I am dense. Ok I am probably dense but how will that give anyone a real idea of pressure in their setup? </p><p>I understand it will give you a ball park idea but how would it do anything more?</p><p> The velocity may match, load may match, but powder, bullet size, case capacity, chamber, barrel surface and size, can all vary.</p><p>Yes you would probably be close but HOW CLOSE? 500 PSI? 1000? 50? 2500? IDK and don't really know how anyone would according to what the companies have always said. </p><p></p><p>If I run a lot of bullets that is .0001 larger, and a lot of powder that is 4% hotter and yet I load the exact same load, and it runs the exact FPS as the factory data, am I running the same PSI? Doesn't seem like I would be unless you simplify things and say that 63k under a certain bullet will always yield a certain FPS. I can buy that a certain area under the curve would yield a certain velocity with a certain load, but not that a peak PSI will. </p><p></p><p>And yes this stuff is over my pay grade which is why I always am happy to run near book and other guys data. I honestly cannot see how the factory pressure data will equal what I am really getting. Might be close BUT might not be. IDK Wildrose am I crazy or just thinking about it in the wrong way? And yes I do realize I am splitting hairs but math is math and if it was as simple as just matching the factory #s with dissimilar setups then why would we need to work up and why would velocity and pressure EVER surprise anyone?</p><p></p><p>Honest question also not trying to stir the pot.</p></blockquote><p></p>
[QUOTE="toddc, post: 1261497, member: 4566"] Maybe I am dense. Ok I am probably dense but how will that give anyone a real idea of pressure in their setup? I understand it will give you a ball park idea but how would it do anything more? The velocity may match, load may match, but powder, bullet size, case capacity, chamber, barrel surface and size, can all vary. Yes you would probably be close but HOW CLOSE? 500 PSI? 1000? 50? 2500? IDK and don't really know how anyone would according to what the companies have always said. If I run a lot of bullets that is .0001 larger, and a lot of powder that is 4% hotter and yet I load the exact same load, and it runs the exact FPS as the factory data, am I running the same PSI? Doesn't seem like I would be unless you simplify things and say that 63k under a certain bullet will always yield a certain FPS. I can buy that a certain area under the curve would yield a certain velocity with a certain load, but not that a peak PSI will. And yes this stuff is over my pay grade which is why I always am happy to run near book and other guys data. I honestly cannot see how the factory pressure data will equal what I am really getting. Might be close BUT might not be. IDK Wildrose am I crazy or just thinking about it in the wrong way? And yes I do realize I am splitting hairs but math is math and if it was as simple as just matching the factory #s with dissimilar setups then why would we need to work up and why would velocity and pressure EVER surprise anyone? Honest question also not trying to stir the pot. [/QUOTE]
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6.5 Credmoor vs 7mm-08
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