Dave,
I don't think there is a conversion in any of the pressures test (CUP, LUP, PSI, TONS). Right or wrong I see PSI pressures up to 12000 and LUP up to or within a 1000 of PSI. So, if I see a LUP pressure at 10000 I know it is near MAX as 12000 PSI is for shotgun shells. Likewise, 8000 PSI being about all I want to run through a Damascus barrel I conclude that 8000 LUP to be close enough.
Hope we don't blow anything up.
Harry
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