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< 16ga. General Discussion ~ Regarding psi proof rating and load selection |
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Posted:
Thu Mar 15, 2007 12:18 pm
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Member
Joined: 01 Dec 2006
Posts: 524
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If a gun is proofed to 13,000 psi for 1oz loads. Does that mean that its proofed to 13000 psi for any load? eg., 1 1/8oz at 8-10,000psi? |
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Posted:
Thu Mar 15, 2007 3:19 pm
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Member
Joined: 28 Dec 2005
Posts: 2016
Location: Glendale, AZ
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Proof pressure is not the same as service pressure:
**650 bars is standard CIP (British and European) pressure for shells designed for guns proofed at the CIP standard of 850 bars**
Per Larry Brown: "Per the master of the Birmingham Proofhouse, the problem with any psi/BAR conversion is that BAR still means crusher BAR, not Piezo BAR, to the Brits. Proof pressure is 13,920 psi; service pressure 10,730 psi. This is very close to equivalent to American standards before modern, 2 3/4" shells were introduced in the 1920's."
"CIP crusher service pressure for High Performance (magnum) is 900 bar service, proof 1200 bar; the transducer values are 1050 bar service, 1370 bar proof."
"Does that mean that its proofed to 13000 psi for any load? eg., 1 1/8oz at 8-10,000psi?" Yes, proofed at 13,000 psi for service pressure 8-10,000 psi. |
_________________ Drew Hause
http://sites.google.com/a/damascusknowledge.com/www/home |
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