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14 gauge double barrel break action 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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14 gauge double barrel break action shotgun

Unread postAuthor: koolaidman » Thu Jul 31, 2008 5:33 pm

Hey again guys. I realized this site has been in a lull. Too few new cannons and too many 13 page topics about zombie uprisings. Ive been working on this shotgun for the past 2 weeks its pretty much done i still gotta paint it tho.

stock- all 3/4" sch 40 pvc
valve- 3/4" watermaster piloted by 1/4" bv.
Barrel(s)- two 2ft lengths of 3/4" cpvc. The Id of which are almost presicely that of a 14 gauge. they are on a hinge and snap open to slide in/ out shells.
shells- 2" copper pipe lengths with washers metal epoxied on. Stuffed with cotton wadding and a paper shot cup.
shot/ ammo- each shot cup will hold either twenty .2 gram airsoft bbs, 50 4.5mm steel bbs, or a marble. also suitable for paintballs w/ out shells.

I designed this with skeet shooting in mind. I havent tried the steel 4.5mms yet because of my yard, but the 6mms will absolutely destroy a cd rom at close range. The shot cups work relatively well, but at a farther range the .2 gram bbs produce a very wide shot, unsuitable for a cd. Im gonna see if the steel ones work any better and possibly make a pidgeon launcher to throw the cd's. I also just got 2 rotten watermellons free from work, so expect to see some carnage in a bit.
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Attachments
100_1247.jpg
built this today too. No shotgun is complete without a gun rack. also showing my m16 bbmg, pump up rifle and sniper.
100_1246.jpg
shells. shell->cotton wadding->shotcup-> airsoft shot.
100_1243.jpg
100_1242.jpg
100_1241.jpg
Last edited by koolaidman on Thu Jul 31, 2008 6:17 pm, edited 1 time in total.
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Unread postAuthor: dudeman508 » Thu Jul 31, 2008 5:42 pm

Do both barrels fire at once
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Unread postAuthor: koolaidman » Thu Jul 31, 2008 5:44 pm

yes
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Unread postAuthor: Mr.Sandman » Thu Jul 31, 2008 6:00 pm

yhat is a really nice lookin gun there mate :shock: i mean it is beautiful!
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Unread postAuthor: potatoflinger » Thu Jul 31, 2008 6:03 pm

That looks great! It looks almost like a real shotgun. Great work :thumbup:
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Unread postAuthor: Mr.Sandman » Thu Jul 31, 2008 6:06 pm

also any chance of some more pics(damage and break barrel) and maybe a vid? what is your operating pressure?
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Unread postAuthor: brother361 » Thu Jul 31, 2008 6:13 pm

thats really cool man good job wat is it a tee that separates them both or what
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Unread postAuthor: biggsauce » Thu Jul 31, 2008 6:29 pm

Looks mean man, nice job

Can you post some pictures of how your breach works?
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Unread postAuthor: stevenarroyo » Thu Jul 31, 2008 6:43 pm

wow man that looks very nice.
maybe i'll make 1 alil like yours. :roll:

how you make the shot gun shells? they look cool too.
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Unread postAuthor: koolaidman » Thu Jul 31, 2008 10:42 pm

thanks guys. more pics to come.

mr sandman- i usually run 100, but id take her to 130.

Brother- it's a fitting got it off flexpvc.com. It doesnt look like its on there anymore. It's a 3/4" TO 1/2" two way manifold. ill show it in a pic.

Bigsauce- its pretty simple. It's on a hinge and The 3/4' cpvc barrels snap into 1/2" coupling pretty nicely since they are almost the same OD.

steve- for the shells i sanded down a foot of 5/8" copper, cut it into 6 2" shells and metal epoxied on heat treated steel washers.
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Unread postAuthor: starman » Thu Jul 31, 2008 10:57 pm

Koolaid, that's a cool little collection you've got there. This shotgun is unique and I have noticed that special adapter at flexpvc.com before.

Innovative and reasonably clean build. Nice job!
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Unread postAuthor: frankrede » Fri Aug 01, 2008 1:06 am

Great work,I have always wanted to build a double barrel shotgun.
I will take your work in consideration.
Nice job



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Unread postAuthor: Darkside 6ix » Fri Aug 01, 2008 1:30 am

Im inspired by your work... truely I am.
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 01, 2008 1:31 am

Interesting, Crosman had made an air shotgun along with its own low powered skeet launcher for target practice.
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Unread postAuthor: psycix » Fri Aug 01, 2008 4:22 am

Nicely done. I like your gun rack :D

Since you are using a handful of smaller projectiles I think the following is not an issue, but have you fired two pieces of spud yet?
I ask that because when one projectile leaves the barrel, all pressure is quickly vented, and the other projectile lacks pressure, causing one projectile to go faster then the other.

Could we get a more detailed pic of your breech?
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