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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What creates a strong cartridge?
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<blockquote data-quote="woods" data-source="post: 750477" data-attributes="member: 6042"><p>Here is a list of SAAMI pressures for different cartridges</p><p></p><p><a href="http://www.lasc.us/SAAMIMaxPressure.htm" target="_blank">Max Chamber Pressure - SAAMI Specs</a></p><p></p><p>Notice the 338 Lapua listed no standard pressure, but I would be surprised if anyone was running a load much over the 65,000 psi standard for modern high pressure calibers like the RUM's and WSM's. IOW the 338 Lapua case should not have to withstand anymore pressure than a 338 RUM, or a 300 WSM or even a 270 Winchester</p><p></p><p>Pressures are regulated by the amount of powder, burn rate of powder, chamber dimensions, bullet weight and bore size so that it would not matter if you were loading 91 gr of RL22 in a 338 RUM or 69 gr in a 300 WSM you would get the same approximate pressures.</p><p></p><p>Therefore the pressure on the brass is the same in both</p><p></p><p>Now if someone can show me where the accepted pressure for the 338 Lapua is more, say 75,000 psi, then I would say that Lapua has a metalurgical secret that they use in the their "super brass"</p></blockquote><p></p>
[QUOTE="woods, post: 750477, member: 6042"] Here is a list of SAAMI pressures for different cartridges [url=http://www.lasc.us/SAAMIMaxPressure.htm]Max Chamber Pressure - SAAMI Specs[/url] Notice the 338 Lapua listed no standard pressure, but I would be surprised if anyone was running a load much over the 65,000 psi standard for modern high pressure calibers like the RUM's and WSM's. IOW the 338 Lapua case should not have to withstand anymore pressure than a 338 RUM, or a 300 WSM or even a 270 Winchester Pressures are regulated by the amount of powder, burn rate of powder, chamber dimensions, bullet weight and bore size so that it would not matter if you were loading 91 gr of RL22 in a 338 RUM or 69 gr in a 300 WSM you would get the same approximate pressures. Therefore the pressure on the brass is the same in both Now if someone can show me where the accepted pressure for the 338 Lapua is more, say 75,000 psi, then I would say that Lapua has a metalurgical secret that they use in the their "super brass" [/QUOTE]
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What creates a strong cartridge?
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