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sprung ball valve hand cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: barrius » Sun Jul 24, 2011 9:04 pm

what size is the barrel?
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Unread postAuthor: jackssmirkingrevenge » Sun Jul 24, 2011 11:44 pm

Barrel looks about 3/4" diameter.

On a related note, have a look at the Yugoslav "Self Suppressing Unit"underwater pistol:

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It fires a steel tipped dart at high subsonic speed that can apparently penetrate a SCUBA tank with "only" 110 bar, that's within the realm of advanced spudders...

Here's what the Автомат Подводный Специальный can do to a SCUBA tank...
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