please be aware that in the noted link there is a gross math error, specifically: "European (CIP) proof pressure of 850 kg per sq. cm. (BAR) = 13,920 psi proof pressure= 10,730 psi service pressure (SAAMI)"
the units of BAR are NOT kg/cm2, units of BAR are linearly convertible to psi at a conversion factor of 14.504:1 and the error in the attached link doesn't have anything whatsoever to do with LUP's not being directly convertible. BAR and psi are both measured by transducers. 850 bar converts to 12,328 psi and 650 bar to 9428. the figures quoted in that link are 13% over. 10,730psi you may as well say is standard SAAMI proof. one won't be doing an 850 bar proof gun any favors by loading to those numbers.
