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Paintball Sniper Rifle

A place to ask general spud cannon related questions.
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Paintball Sniper Rifle

Unread postAuthor: aKfMx » Sun Sep 04, 2005 11:21 pm

I have already made an air cannon that was supposed to be a sniper rifle but it wasnt too good. I want to make another one that has the following features: Enfield Monte Carlo rifle stock, some kind of fast valve (i have been thinking of how to use a pressure washer trigger because the sprinkler valve seems too big, but maybe not), pvc pipe for the barrel, scope, someway of pressurizing a large tank and being able to fire about 10 shots without any more air. I want it to look as real as possible. And I have been trying to figure out how to incorporate all those features, so if you guys could give me some feed back that would be great.
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Unread postAuthor: boilingleadbath » Mon Sep 05, 2005 12:01 am

Hmm...
Laminate some wood, cut to rough shape with with bandsaw, get out a rasp.
I would sugest a right angle quick exaust valve - not as cheap as a sprinkler, but much better - and more compact.
Paintballs fit well in either 3/4" sch 80 PVC, or 3/4" cpvc.
Epoxy it to the barrel?
Connect your large chamber to your small chamber with a ball valve; just open the valve and your small chamber is filled. You could put a regulator in there somwhere if you want consistency. Your large chamber could be 1.5", about 18" long (use it as the fore-arm of the rifle) This would be followed by a reducer to your ball valve, from witch you would expand to 1" (your small chamber) , go an inch or 2, make a 90* bend, and end in the QEV (after a reducer). This would then connect to your barrel (even this small chamber can support a 30" barrel at 100 psi), on which I would put a bolt action. Power will fall after each shot, but there's not much you can do about it aside from pressurizing your 1.5" chamber to a high pressure (twice the pressure you want to use in your system) and regulating - with that system, pressure will remain constant for the first 10 shots or so, and then begin to fall.
Bondo works wonders.

The thing works out like this:
<img src="http://img.photobucket.com/albums/v611/car2/Riflediagram.png" alt="diagram">
NOT to scale
A: shrader valve
B: large chamber
C: support
D: reducer
E: ball valve (not shown with optional regulator)
F: reducer
G: small chamber
K: 90* elbow
J: air hose
H: trigger
i: pnematic button
L: QEV
M: breach loading mechanism
N: barrel
O: scope
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Last edited by boilingleadbath on Mon Sep 05, 2005 1:08 am, edited 2 times in total.
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Unread postAuthor: aKfMx » Mon Sep 05, 2005 12:38 am

Hay thanks!! i was just expecting someone to reply maybe in about a week and only say to think of my own creation which i have been trying to do. That helps a bunch, Thanks!!
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Unread postAuthor: spudshot » Mon Sep 05, 2005 8:36 am

a wood enfield monte carlo stock will set you back a crapload of money, they do sell new ones made out of plastic (not sure what kind of plastic) which are only about 50 bucks, i think advanced technology makes them
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Unread postAuthor: saladtossser » Mon Sep 05, 2005 11:15 am

since we r on the topic of snipers, do air rifling work? as in porting the barrel in a spiral design.
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Unread postAuthor: boilingleadbath » Mon Sep 05, 2005 1:54 pm

'Air riffling' shouldn't work - I don't see how that would apply tourque.

As to the cost of a stock, you should be able to get the wood you need for under 10$. I would recomend not using a hard wood - it's more expensive, and you probably don't want to spend that much time with a rasp.
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Unread postAuthor: aKfMx » Mon Sep 05, 2005 5:25 pm

Well, could i use a stock like this http://www.globaltrades.com/sks_stocks.html and stick a pressure washer handle where the trigger and magazine is supposed to go? That way i could hook up a paintball barrel to the handle and go from there. Do u think the handle would fit inside there?
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Unread postAuthor: spudshot » Mon Sep 05, 2005 5:33 pm

it will probably require some fitting, so i'd order the wood one, fiberglass is nasty stuff
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Unread postAuthor: aKfMx » Mon Sep 05, 2005 5:43 pm

Yeah, the top one is what i was thinking about. How come it is only $10? How do you suppose i would keep the trigger handle in there without jerry rigging it?
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Unread postAuthor: spudshot » Mon Sep 05, 2005 6:37 pm

they're so cheap because there are MILLIONS of surplus sks rifles around, you can pick em up for 100 bucks or less, so a stock is pretty easy to come by. i really dont know how you're going to rig up that handle to it, maybe make some brackets for it to fit in the stock?
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