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Old January 19, 2021, 08:47 PM   #26
eflyguy
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Quote:
Originally Posted by Chipperman View Post
Standard 7..62x51 M80 generates about 50,000 to 52,000 SAAMI CUP depending on which source you look at. (see Unclenick's post above)

My Lyman manual lists multiple .308 loadings >60,000
I think you're the one that needs to read his post (and the linked article).

CUP and psi are not the same unit of measure.
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Old January 19, 2021, 09:01 PM   #27
Chipperman
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I stand corrected on that. I know PSI and CUP are not the same thing, but I did not realize that the Lyman manual uses both seemingly randomly within the same chart.
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Old January 19, 2021, 10:16 PM   #28
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The cases are dimensionally the same (on the outside, anyway).

I would remind everyone that even though one may be loaded hotter than the other USUALLY is, they are all well under the proof load level and nowhere near DANGEROUS pressure levels, unless your gun is defective.
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