canoe on the yukon
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- Feb 25, 2009
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Yes, lower. Any of the powder companies will say so. It has been written about extensively by Brian Pearce in Handloader.
While they are totally different methods of reading pressure, and there is no direct cross reference available, 36,000 PSI is noticeably lower pressure than 43,500 CUP.
FPS and MPS have nothing to do with my statement, which is accurate, and factual.
Ditto.....PSI and CUP are not the same thing however the SAMMI pressure standard was lowered.