View Full Version : Difference units of measurement
pearcetopher
11-02-2013, 06:09 PM
Hi guys,
when I cross reference my BHN to max psi is this the same thing as cup? is there a difference or a conversion?
why do hogdon manuals list sometimes cup and other times psi?
sthwestvictoria
11-02-2013, 06:19 PM
I thought the CUP was equivilent to PSI - this from ABC handloading By Bill CHevalier page 35:
86234
and from Lee Modern Reloading, 2nd Ed:
86235
pearcetopher
11-02-2013, 07:20 PM
perf
thankyou
Larry Gibson
11-02-2013, 08:11 PM
There is no direct correlation between CUPs and LUP to psi as measured (and so stated as "PSI" in today's manuals) by peizo-transducers or strain gauges. You might also not get wrapped around the axle over Lee's BHN to psi reference as there is little real correlation there also.
Larry Gibson
theperfessor
11-02-2013, 08:31 PM
^^What he said^^
runfiverun
11-02-2013, 08:42 PM
There is no direct correlation between CUPs and LUP to psi as measured (and so stated as "PSI" in today's manuals) by peizo-transducers or strain gauges. You might also not get wrapped around the axle over Lee's BHN to psi reference as there is little real correlation there also.
Larry Gibson
saving myself some typing.
bhn22
11-02-2013, 08:49 PM
Word, brother.
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