Thanks again, although I believe I've found a different solution. Crude magazine.jpg This is a crude magazine I've cobbled together with some brass pipe, compression springs, epoxy and heat shrink tubing. The capacity is about 50 .177 bbs. There's a large "L" shaped groove I cut to allow the followe...

Welcome to the forum! Are you thinking of an air powered version of the Vergeltungswaffe 3 ? https://i.imgur.com/b6axwmYl.jpg If so, I think it's an unnecessary complication. Apart from the difficulty of triggering the second valve at the right time, if you want sustained pressure in the barrel you ...

Hey everyone! Been lurking here for a while after discovering this place while doing research on a pneumatic cannon, finding solutions to problems, etc. Now that it's been designed, built, and tested a few times I figured I should post here. I'm going to break this down into parts/chapters to make i...

Another option that I like is a double barrel machine gun. I would only use a 5/2 solenoid valve, but with all its inputs and outputs. The guns alternate one and one when firing, because a shot occurs when the solenoid valve is activated and also, when it is disabled. With this arrangement, it is po...

Here's something a little unusual that I acquired a while back, it took me some time to play with it as I needed to make an adapter for a new chamber and it's only recently that I was able to cut non-standard threads on the lathe. I bought this one without any accessories and with an air reservoir t...

Really getting into the Nerf stuff and transformed my airsoft bullpup into a single shot muzzle load pistol by turning the grip and trigger around, barrel is a piece of 1" round nylon that I drilled to take the Nerf dart, these are actually X shot darts which work much better as they have like a rai...

Some balanced valve development: https://i.imgur.com/hRYtNSph.jpg Balanced valve V1 and housing compared to the improved poppet and original housing. Note the groove at the head of the valve to allow air to vent into the balanced portion. The head diameter is also reduced to 6mm from 8mm for better ...

Installing the two cannons and manufacturing the ammunition magazines. I'm making 4 long tubes of 70 bbs each, to swap out while shooting. I used small ball valves, I have several, to seal the tube and be able to handle it without the bbs falling. Once fixed on the weapon, by means of a hard rubber ...

Testing an idea I had for a semiauto tube fed gravity feed and it seems to work, air goes up into the magazine and pushes the balls back up the tube because of a small amount of air bleeding out of the top of the tube, when the pressure builds up enough the front ball pops out like a cork as there i...

Crazy project :o Thinking of assembling a steel bbs launcher, powered by a small jet engine of the compressed air-gas type. Compressed air is not used directly to power the bbs. Before, it is introduced into a combustion chamber that burns the air mixture. butane, continuously, producing a jet of ga...

Bienvenu! I'm aiming at 20~30 Joules, to shoot invading nutrias on my pond One little note, we do not discuss shooting anything but inanimate objects on this forum. I made a little HGDT model of your idea wtih a modest chamber of about 100cc volume and a 75cm barrel and... 20-30 Joules? Even at 10x ...

JSR links in 3,2,1... How dare you assume exactly what I was going to do ;) There are precedents for both ideas. Apart from rifled shotgun chokes, having a small rifled sectioned at the muzzle is also the principle behind the FX smooth twist barrel that by all accounts works very well: https://www....

Ever considered ECM rifling? I believe the FGC-9 and it's ecm'd barrel have been shared here before; https://youtu.be/AyPJ2br5NFQ Smith and Wesson has been using ECM to rifle barrels for a while now....a quick look at the commercial version of the process; https://youtu.be/CylcaXYNzcg Looks a bit ov...

Work in progress. Managed to make the stock (it took forever!) using two wooden board and a plywood board for reference, modeling and carving them for inletting the parts was quite hard with hand tools, huge respect for those who didn't use power tools and got pro results. Trigger ready, I had to us...