I'd be down for 20 to 50 cases, depending of the price. Do you have a ballpark estimate?
I'd like to thank you for clearing that up. Did Mr. Remo say why 416SS was used? As CanAm pointed out, it apparently doesn't cold work well. It makes sense to use it for how well it machines, and to reduce corrosion. As the cases will be sized to my chamber to the best fit, I don't see them wearing out prematurely; I wonder how long 20mm cases made with this process lasted, and if they were annealed or otherwise heat treated.
I was thinking about ways to machine the inside of the case today, came up with a few ideas. They'll be quite slow and touchy on a manual lathe, but I tested with a 0.400" diameter boring bar and I shouldn't have too much trouble boring the internal section of the case. It'll be extremely slow, but not impossible.
The 14.5 does have a small neck compared to the rest of the case, this complicates things as I'll need to cut a diameter inside the case that's much larger than the case mouth. Unless I can find a boring bar that can extend and retract the insert, independent of the boring bar position, while the bar is within the workpiece, I'll have to make my own. I already have a design for such a tool; simply put, a boring bar with a threaded hole down its center, and the insert mounted on a rail. A threaded shaft goes down the length of the boring bar to the rail, and is used to extend or retract the insert without moving the lathe X axis.
Again, I am extremely grateful for the input, and I'll be ordering CCI #35s soon.
Comforting to hear, as the powder load still makes me nervous. It's like the uncharted territory of the unknown country in another universe. With landmines.
Out of the 12' bar stock of steel I ordered, I reserved about 10 cases' worth for "plinking"; cases with just a straight bore down to the flash hole. Case capacity is extremely reduced, but those cases would serve only for a thousand+ grain cast bullet on top of Trail Boss and a shotgun primer. They'll probably be leaving at BP speeds, but they won't be very expensive to shoot. It'll be what I'll let friends shoot, as I do not want to see them injured if something goes wrong with a standard load.