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Simple coaxial shotgun

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: jackssmirkingrevenge » Tue Jan 29, 2013 2:08 pm

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Unread postAuthor: far_cry » Tue Jan 29, 2013 11:44 pm

nicely built and good stock,however the seam inside the 3/4" pipe make's
slower open time specially with that pilot valve.

what i suggest is ,put 3/4 coupling then put 3/4" BRASS nipple and drag the barrel to the start of the brass nipple and done.

you have smooth bore that you can make a good round piston that fits with no gaps.
it will be more efficient
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