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Fish Killer Project

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: jrrdw » Sat Jun 09, 2007 7:41 pm

"Que? It's a schrader with a one-way core." Looks kinda like a male part of a coupling. But yea i want to see it when you get it together, with the breech open and closed if you would. Sounds easy enough.
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Unread postAuthor: PVC Arsenal 17 » Sat Jun 09, 2007 7:44 pm

Well I broke down and pieced the fittings together just for the sake of explaining it. Nothing's glued but:

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Unread postAuthor: rna_duelers » Sun Jun 10, 2007 1:06 am

Have you ever fired projectiles into/at water before?The projectiles have a tendency to ricochet.Might I suggest heavy projectiles,as inertia & kenetic energy is your friend when shooting into something like water.

How long till it's complete?
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 10, 2007 12:41 pm

I thought it was the opposite. I was hoping wire darts would pierce the water with little effort rather than building a beast of a cannon to shoot heavy stuff.

No matter, there are plenty other things I can shoot at. I have to find some way to get rid of the hundreds of darts I have around from my blowgun.

I'll hopefully be done by next weekend if everything arrives on time. Gluing the chamber will be a snap, and then I have to assemble the breech. JB Weld should hold all that, no?
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Unread postAuthor: ShowNoMercy » Sun Jun 10, 2007 1:11 pm

Didnt you watch that mythbusters episode about firing guns into water? The high powered rifles shattered once hitting the water, whereas the slower shooting shotguns was deadly to a much deeper depth.
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Unread postAuthor: pyromaniac » Sun Jun 10, 2007 1:20 pm

ShowNoMercy wrote:Didnt you watch that mythbusters episode about firing guns into water? The high powered rifles shattered once hitting the water, whereas the slower shooting shotguns was deadly to a much deeper depth.


The 9mm pistol went the farthest i belive. but and way they also did a episode about shooting under water. I can't really remember abotu that one though check dicoverys site.
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Unread postAuthor: ShowNoMercy » Sun Jun 10, 2007 1:22 pm

I am not really sure exactly who made it, but I am sure JSR can fill in for me, but some country made a gun that fired darts and was supposed to be used underwater. You may want to look at that.
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Unread postAuthor: Specialist » Sun Jun 10, 2007 1:24 pm

ya pyro, your right the hand guns shot into the ballistics gel the farthest. the episode was on today. but the shotgun didnt do any damage. and i think that the bbs from the shell didnt even make it to the gel. i could be wrong though.
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Unread postAuthor: pyromaniac » Sun Jun 10, 2007 1:30 pm

I said this because i think maybe this gun may go as fast as a 9mm. They don't fire that fast do they 500fps?
Corect me if im wrong.
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Unread postAuthor: ShowNoMercy » Sun Jun 10, 2007 1:33 pm

They average over a 1000 fps, where is JSR when you need him.... lol
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Unread postAuthor: Specialist » Sun Jun 10, 2007 1:34 pm

for an airsoft gun 500 fps is incredible but i dont know what your really talking about. i guess 500 fps for anything other than a real gun is good.
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Unread postAuthor: pyromaniac » Sun Jun 10, 2007 1:36 pm

ShowNoMercy wrote:They average over a 1000 fps, where is JSR when you need him.... lol


have you looked at jdr page of pictures? theres a sighn on it that says can you run 675 fps if not you beter be bullet proff. made me thing pistols were around there.
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Unread postAuthor: ShowNoMercy » Sun Jun 10, 2007 1:37 pm

I just looked up the FPS of the standerd NATO 9mm round.
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 10, 2007 1:40 pm

ShowNoMercy wrote:I am not really sure exactly who made it, but I am sure JSR can fill in for me, but some country made a gun that fired darts and was supposed to be used underwater. You may want to look at that.


I believe Heckler & Koch made something like that. Let me look it up.
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Unread postAuthor: PVC Arsenal 17 » Sun Jun 10, 2007 1:42 pm

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