Once again, glad you're here Larry
So the 'close but not really correct' formula should be?

A service pressure of 3 tons per sq. in.= European proof pressure of 850 kg per sq. cm. (BAR)= 13,328 psi proof pressure= 9960 psi service pressure= 650 BAR service pressure

Or asked another way:
I have this gun marked 3 Ton 850 BAR 1 1/8:
Shells at what PSI was it originally designed to shoot?


Last edited by revdocdrew; 03/31/07 10:00 AM.
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