How is it that shotshells can be made with a significant plastic component? - Page 2
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How is it that shotshells can be made with a significant plastic component?


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Old 09-02-2008, 10:42 PM   #11
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I see your point. Thanks for the info.
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Old 09-06-2008, 07:08 AM   #12
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Pressure is the difference. Shotguns are generally loaded
from 7000 to 15,000 psi in plastic. Rifles are loaded from about
30,000 to 70,000 psi in brass cases. Plastic can't work at
those pressures.In our 12GA FH testing we run plastic cases
higher up to 23,000, but they don't extract good.
But we als found in our testing that the thin balloon-
headed 12ga brass cases, that are being made and used a lot
for low pressure blackpowder shooting and competition
wouldn't take as high of pressures and expanded more
than good plastic 12ga cases..Ed

Last edited by hubel458; 09-07-2008 at 03:14 AM.
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