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My new copper coax with a custom wood stock

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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My new copper coax with a custom wood stock

Unread postAuthor: jook13 » Wed Dec 03, 2008 2:57 am

So here is my latest spud creation. At heart, she is a simple coaxal piston made from copper. I just prettied it up and made it more fun to shoot with a custom stock and scope.

Compared to my last copper cannon, this one seems kinda weak. I think that is due to the weight of the ammo that I am using for this one. My friend gave me a box of 308 caliber bullets and the fit very nicely in my 1/4 inch copper barrel, but they are a LOT heavier than the marbles that I shoot out of my other larger qev gun.

Anyways here are some of the specs...

Barrel: about 40 inches of 1/4 inch copper
Chamber: about 30 inches of 3/4 copper tubing. I blocked off some of the chamber with epoxy.
Valve: A piece of wooden rod with a piece of neoprene epoxied on
Stock: A chunk of 4x4 doug fur carved with nothing but a skill saw, jig saw, and sandpaper. then stained.
Pilot valve: Blowgun
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Attachments
stockalone.jpg
The stock
fullgunwithnostock.jpg
The gun without the stock
fullgunwithnostock.jpg (37.79 KiB) Viewed 6936 times
scopeandtrigger.jpg
A close-up of the scope and trigger.
scopeandfill.jpg
The trigger and scope with no stock
fullgunwithstock.jpg
The full completed piece.
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Unread postAuthor: cheeseboy » Wed Dec 03, 2008 3:01 am

All I can say is wow, this is a very nice looking gun! also what pressure do you use your copper at, I normally use them at 200-250PSI. I have to say I wish I could craft like that :oops:, this is the definition of ergonomic!
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Unread postAuthor: jook13 » Wed Dec 03, 2008 3:08 am

Normally I would take it up to around 350 psi or so. But my fridge compressor took a poop and I need to build me another. For now I take it up to the 150 that my compressor allows. Or if I am feeling frisky, I can use my shock pump, but is just too much work...
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 03, 2008 3:09 am

Prettied up indeed :) shame about the "unnatural" length, it looks like a Mauser T-Gewehr :) I would have considered a trigger extension and making it a bullpup. It would look good with a bipod though ;)
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Unread postAuthor: Gippeto » Wed Dec 03, 2008 2:36 pm

Very nicely done Jook. :)

Find some lighter rounds, get the pressure up and it'll be a beast!

Perhaps something like this? :D

http://www.hornady.com/shop/?page=shop/ ... yword=6411
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Unread postAuthor: jook13 » Wed Dec 03, 2008 2:49 pm

Thanks guys. It is a shame about the unnatural length, but I imagine the power will be worth it when I get the power up. The stock was kinda an after thought, but I still like the way it looks.

Gippeto, did I read that right? 29 bucks for five of those balls?
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Unread postAuthor: jitup » Wed Dec 03, 2008 3:01 pm

this is very nice. I might build a larger version w/ a piston valve.
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Unread postAuthor: iisthemuffin » Wed Dec 03, 2008 3:32 pm

jitup wrote:this is very nice. I might build a larger version w/ a piston valve.


It DOES have a pitosn valve.
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Poop.
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Unread postAuthor: jackssmirkingrevenge » Wed Dec 03, 2008 3:37 pm

iisthemuffin wrote:It DOES have a pitosn valve.


Exactly, and he said he'll make it with a piston valve instead ;)
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Unread postAuthor: Brian the brain » Wed Dec 03, 2008 3:53 pm

Very nice!
Good to see you went for the pitosn valve.. :D

I imagine you could just cut off the extra bit of blowgun and just leave the trigger...?

The extra length is okay...I hate short guns anyway~!

:roll:

Keep at it!!
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Unread postAuthor: iisthemuffin » Wed Dec 03, 2008 3:59 pm

Haha well crap. I didnt even notice that spelling mistake there. I just get typing and i lose track of where my fingers go.

Well what i meant to say was It DOES have PISTON valve.

Its hard to make something instead of the original if the instead project is the exact same as the original.

Yea im aware that sounds confusing and almost makes no sense.
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Poop.
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Unread postAuthor: jrrdw » Wed Dec 03, 2008 4:02 pm

Very nicely done! The natural look on the stock looks great. I'm jealous fore-sure! I love that look on a rifle. You haven't powered it up yet? Did I read that right? Tell us more please... :D
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Unread postAuthor: jook13 » Wed Dec 03, 2008 5:14 pm

When I said "get the power up", I meant get my high pressure pump up and running. I have shot it at up to 150 psi so far. I had a fridge pump, but its broken. At 150 psi, This isnt too impressive, barely making it through a piece of 1/2 inch plywood. I plan to make videos when I get my next fridge compressor up and running (should be soon, I have an extra in my garage, just need to put the fittings on)

And about cutting off the end of the blowgun, that is a pretty good idea, I think I will do that too.

Thanks for all the kind words, makes me even happier I spent all those hours sanding..
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Unread postAuthor: Brian the brain » Wed Dec 03, 2008 5:18 pm

One of the best attempts on a wood stock. ( peace bro :D )

You should make a how-to about it.
Should help a lot of guys here.
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Unread postAuthor: pocket » Wed Dec 03, 2008 6:05 pm

lol how the hell did u get a .308 bullet into a .250 pipe?
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