I believe you have gone off on a "dead End spur" or Tangent to the basic Thread as posed by the OP in that the OP is looking for a RELOADABLE cartridge NEAR to the size power range of a .22 Long Rifle RF or .22 WMR cartridge. He has stated it may NOT be greater than .230" Caliber, although it is not stated whether this is a limit on the Bore or Groove diameter.If anyone ever was to sell rimfire components and some kind of home seat and
crimp bullet tools I think they would sell millions.
Hoo boy....wonder how many million fingers and eyes....and maybe whole homes....would disappear?
I've not seen it on person, but have on video: after the case is drawn, a primer slurry is dropped and the case spun to force the slurry to the outside, i.e., the rim. Then the case is heated to dry the slurry. The case is next charged with powder, then the bullet inserted, crimped and packaged. All done on high-speed machines, of course, that make millions of cartridges per day.
It's the primer slurry that's problematic for home reloaders. Even if we had a machine that would spin the cartridge satisfactorily (maybe a drill chuck?), the slurry is extremly volatile, particularly as it dries into an unstable solid.
All of us have taken apart a rimfire cartridge (haven't we?. The powder grains seem much smaller than any reloading powder I've ever used, and is, no doubt, an extremely fast type. I suspect it's not available on the open market.
You could probably make your own primer slurry.....please don't tell me you're my neighbor!
In the past there were Rimfire primed cases available for retail sale within the USA and Hand Loaders did add there own powder and bullets to these primed cases.
I presently have an old "Hollywood Gun Shop" (Hollywood Engineering) Threaded "H" design shell holder that is cut to fit .22 Rimfire case and rim Very Nicely. So I presume reloading tools Were available commercially
I have read of persons shooting Silhouette competitions with hand loaded Rimfires.
Have I done it myself? No.
I also think it would be Possible to make CF Cartridges in .22 RF sizes or some of the older .22 RF case sizes that were produced prior to WW2.
Careful machining could produce a .22 CF case that would take a Small size primer (power to be determined) to take a nominal .224 diameter bullet and a powder charge to send it down range somewhere between Subsonic and supersonic velocity without pushing chamber pressures over the present SAMMI .22 RF pressure limits.
It has been done in the past.