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<  16ga. Ammunition & Reloading  ~  How much is 650 bar?
Kiwishooter
PostPosted: Sun Dec 03, 2006 12:57 am  Reply with quote
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Newbie here figuring where to start. Can anyone tell me how much pressure 650 bar is? I take it the measurement is metric but have no idea if it is kpa or what.

It is the factory load of Fiocchi Italy (not Fiocchi USA). I'm considering using these hulls for reloading but need to know if I can shoot the factory load first and then reload the hulls!

Thanks!

Ross
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revdocdrew
PostPosted: Sun Dec 03, 2006 6:00 am  Reply with quote
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This is a link to the B&P speed/pressure chart (both psi and bar)
One load is 650 bar or 9,432 psi-fairly hot
http://www.bandpusa.com/files/db_trio.pdf

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Foursquare
PostPosted: Sun Dec 03, 2006 10:17 am  Reply with quote
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That jibes with some data I found on the Armusa site.
100 bar is approx. 1450 psi.

Pete

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Kiwishooter
PostPosted: Sun Dec 03, 2006 11:02 am  Reply with quote
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[quote="revdocdrew"]One load is 650 bar or 9,432 psi-fairly hot

Thank you Rev. Probably too hot for the 1920's Westley Richards but OK for the newer Merkel. I think I'll shoot the factory loads through the M and reload the hulls with something a bit sweeter.

Ross
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Larry Brown
PostPosted: Mon Dec 04, 2006 7:24 am  Reply with quote
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You have to be a bit careful converting bars to psi. 650 bars is standard CIP (Brit and European) pressure for shells designed for guns proofed at, again, the CIP standard--which is 850 bars. According to the Birmingham Proof House--and this has to do with how they measure pressure (by the old lead crusher method)--working pressure for an 850 bar proof gun is actually 10,700 psi. So that B&P load is certainly within the 650 bar limit, but might not be one you want to shoot lots of in a vintage Brit or European double. The B&P loads tend to be pretty hot. If you're shooting a lot of shells in an older gun with lighter proofs, reduce the shot charge, the velocity, and the pressure. Such loads will be easier both on the gun and on your shoulder.
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Kiwishooter
PostPosted: Wed Dec 06, 2006 12:32 am  Reply with quote
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Thank you Larry!

Ross
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