Pump action shotgun

[andremat]

Hello everybody, that's my first post. I come from the french spudgun forum (so, sorry for my poor english) and I have already built some spudguns and pneumatics rifles including a semi auto BBs rifle which has been introduced few months ago on this forum.

Here is my last creation :


The M245 Pump action shotgun

Caracteristics :

Cannon: copper / gauge 12mm ; lenght 550mm
Chamber: Approximativley 25ml

Home made quick exhaust valve 3/4'
tubular magazine
pressure used : 12 bars
Air tank : 1 liter
Ammo : 12mm steel ball



Pictures






Inisde the wood :









The rod links the sliding part to the valve which fills the chamber for each shot.


Movie:
http://www.dailymotion.com/swf/k4mPr5Di ... &related=1
(the magazine was empty for the last shots of this vid)

sorry for the quality.

[n-strike]

That looks pretty, eh...funky.

[brogdenlaxmiddie]

Good Job! Your english is pretty good as well!

[jrrdw]

I haven't watched the video yet, but I will. Looks good so far. Your english is pretty good, I,m glad to see the French spudsite members sharing their cannons with us Spudfile members.

Welcome to Spudfiles.

[iisthemuffin]

Wow. I really like this! Its true to the name indeed. I watched the video and it operates just as a shotgun should.

Amazing work.

[blind909]

That is F*cking Awsome. You should make a wooden frame to hold the pump, barrel, and mag, then paint it black, and you could make it look like a real shotgun!

[Antonio]

Looks nicely integrated maan! Awesome

After seeing the vid:

Damn its really impressive. It even looks pretty efficient. Do you have more figures? How does the loading port work?

[hi]

thats very interesting. you load and fill with only 1 pump. i think you should refine the design and use co2, that way its portable.

[jrrdw]

Very nicely done! The video was good to watch. Here in America we call that a riot gun because of the pistol grip. Thanks for sharing your cannon.

[andremat]

Thanks for the commentaries.

To the several suggestions :

-Yes, I thought to put a wood piece to operate the system.
You mean like this one :

I think it could really improve its style.
I'll think about it...

-For the loading system, here is more picture and vids to understand how it works :

A spring pushes the balls on the left which go to the barrel with the inclined plane.
(the magazine is located on more on the left in normal use)

http://www.dailymotion.com/andremat/video/x6c9r3_vid013

A zoom on the valve which fills the chamber for every action on the pump system.
http://www.dailymotion.com/andremat/video/x6c9sh_vid039


For the grip, I was inspired by the SPAS-12 :

[SpudFarm]

great job!
4/5 because of the wood if you have got some kind of plastic for the grip it would have got top score

[trollhameran]

Nice gun, im almost finished on my prototype shotgun, with pump action bottom ejection system, just need to work out how to make the mag work.

[-X3-]

Héhé, beau travail !
Tu vas avoir du succès sur Spudfile !

hehe, good job!
You'll have success on Spudfiles now!

[jackssmirkingrevenge]

Very impressive, especially the way you combined the ammunition reloading motion with chamber filling. Shame that it (understandably) seems a little low on power, given the construction I think you can afford to up the pressure though, it could proabably take unregulated CO₂

[Necrosis]

I like how simplistic everything works...

Really.. a ballbalve on a stick would never have come to my mind...