Thank you, Squib Joe! Looks like I'm going to buy a steel RIA if I get into this caliber. Google shows ZERO handloading data, and my guess is that the round nosed 9R bullets aren't commercially available. The whole point of the 22 TCM is to be able to use standard jacketed 22 caliber rifle bullets.
FWIW, a while back I fiddled around with a wildcat cartridge called the 9x25 SSX (Seismic Sam eXpress) that could get 90 grain JHP 9mm bullets up to 2150 FPS in a 6" 9x25 Dillon barrel, and the muzzle flash and report were truly epic.

Unfortunately, the stress on the gun and cases were a little more than I liked, and since I couldn't eclipse the S&W .460 XVR that holds the record for handgun MV, I dropped the project. FWIW, the parent brass was 6.8 SPC rifle brass, which could handle the pressure.