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Rifles, Reloading, Optics, Equipment
Reloading
Why Now....higher pressures
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<blockquote data-quote="J E Custom" data-source="post: 1241870" data-attributes="member: 2736"><p>+1</p><p>Well said.</p><p></p><p>Having been around for a long time and loading for 50+ years there have been many changes in loading manuals and firearms so one must figure out what data and philosophy he/she wants to subscribe to.</p><p></p><p>On the issue of CUPs compared to PSIs there is no direct correlation between the two because of differences in cartridges and chamber dimensions. The main thing is to recognize the strength of</p><p>the action and the recommended operating pressure for that action/design.</p><p></p><p>Older firearms, were not rated as high as new firearms for many reasons and 48,000 to 55,000</p><p>Psi (Or its equivalent) should be used in these firearms. Newer firearms are designed for the higher pressures to enhance the velocities (It seems that Everyone wants speed these days) but as discussed, may not be in the best interest of the firearm or the brass cases.</p><p></p><p>A long time ago I set "MY" max pressure at 62,000 PSIs in modern designed firearms and cartridges and have not regretted it. The rule I use for more velocity is More barrel length, larger case capacity and slower powder burn rates = More velocity @ lower pressure.</p><p></p><p>Just My Opinion</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1241870, member: 2736"] +1 Well said. Having been around for a long time and loading for 50+ years there have been many changes in loading manuals and firearms so one must figure out what data and philosophy he/she wants to subscribe to. On the issue of CUPs compared to PSIs there is no direct correlation between the two because of differences in cartridges and chamber dimensions. The main thing is to recognize the strength of the action and the recommended operating pressure for that action/design. Older firearms, were not rated as high as new firearms for many reasons and 48,000 to 55,000 Psi (Or its equivalent) should be used in these firearms. Newer firearms are designed for the higher pressures to enhance the velocities (It seems that Everyone wants speed these days) but as discussed, may not be in the best interest of the firearm or the brass cases. A long time ago I set "MY" max pressure at 62,000 PSIs in modern designed firearms and cartridges and have not regretted it. The rule I use for more velocity is More barrel length, larger case capacity and slower powder burn rates = More velocity @ lower pressure. Just My Opinion J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Why Now....higher pressures
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