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Homemade Magazine-fed Revolver

8 years 6 months ago

And why not BLAM film your video BLAM BLAM in an active gun range?

From YT:

"Well here we go. Gas-powered auto-ejection was just the start. Converting it to 9mmPara was a prelude. Here we have the real deal: a magazine-fed revolver handgun that takes standard cartridges. "Neva Been Dun Befoa!" It HAS been done in 20mm and 30mm autocannons for aircraft - see also the US M39 series cannons and the gun the Nazis never put into production, the Mauser MG 213. The US version seems to have used gas pressure in at least part of the cycle? I didn't deliberately try to clone these designs, I found out about them halfway through doing my critter.

Watch carefully for the flying empty shells, and count the shots as I go. There is NO editing here of any sort. Once shot #7 from the cylinder and first mag is fired, it leaves an empty shell under the hammer. No problem: stick a new mag in, it injects a live round just left of the hammer, cock it, it puts the live in front of the hammer and the empty in the auto-eject spot, fire, kicks out that empty. So you can go from mag to mag to mag without having to "reset" anything.

Yes, the video quality isn't the best - I'll do an improved version as soon as I can.

The manual ejector is gone. The barrel is multi-part: the rifled core is a 3.25" section of Douglas Premium .355" barrel threaded into the frame and with another thread at the muzzle. There's a muzzle-end nut that compresses the stainless steel sleeve, pulling the barrel forward much like a Dan Wesson revolver and like a DW, the barrel/cylinder gap can be finger-adjusted. On top of the barrel nut is a gas trap that can be spun to adjust windage as it doubles as the front sight base. The gas trap bolts to the muzzle nut with a series of set screws. The gas trap dumps ejection gasses to the rear through the original frame mount for the ejector rod. On ejection shells hit a hammer-mounted deflector instead of my right cheek as in early tests :). The magazines use Wolff coil springs meant for a 32-20 levergun. Cylinder blank is by Bowen Arms, David Manson made my finish chamber reamer (wonderful smooth results!), the compression barrel sleeve is a section of handlebar from a 1980 Honda CB900c :). Copper and brass bits from a local Ace Hardware :). The magazine flat springs for retention are modified hacksaw blades with the teeth polished off.

The only tuning left is to the magazine latch system, and I think that will be easily fixed. The latch for the 2rd "carry mag" is already working as it is shorter than the one needed for the 9rd mags, which have to run across the face of the top shell as a retainer.

Feed and ejection reliability is now 100%!!! The only issue left is a slight slow-down in engaging the latch on the 9rd mags and I think I know how to fix that. With minor tuning and building a second 9rd mag, I will have 25rds capacity on tap reloaded at least as fast as a modern double-action revolver - probably faster if the new latch works like I think it will. This thing will be an absolute hoot and a half at a Steel Challenge or ICORE match where the rules don't yet categorically ban mag-fed revolvers, and showing up with it at a SASS match should be hilarious.

Here's the weird part: this did NOT actually start as a "Steampunk project". It just..."went there on it's own". Anybody know where I can score some brass goggles for cheap?"