So I have been quietly working on a 38/357 Gatling Gun of my own. Today it was above average temps so we went to the range with 150 rounds to give it a try. It is very much based on what bruski has posted on the forum, with a few mods. Extractors are a flat formed spring, similar to a marlin 336, carrier is one piece 7075T6 AL, Barrels are from the guy in Sacramento. Cocking ring and recoil lug are "one piece" which was machined out of two pieces of DOM machined separately and then placed one withing then other and silvered together. This is all on a manual lathe and manual mill, no CNC, not even a DRO.
This was somewhat of a proof of ability test, now I will go back and start cleaning up, finishing out. I did run into one issue, cartridges jamming up on the feed. It seems like some of my brass has a little thinner heads (actually I think some are rounded a bit on the edge) than the others and it managed to wedge one rim behind the other. For the folks who have experience on this, how does your groove depth relate to the head thickness? Not sure if I made the groove a little too wide or not wide enough... I milled it out off a piece of 3/4 sq AL, so I figured I would just try making a couple up with slightly different parameters and see what works better.