The TCM-22 is a necked down 9mm
(http://gunsmithtalk.files.wordpress.com/2013/01/22tcm.png?w=500)
9mm - three 22 TCMs - 45 ACP
(http://forums.handloads.com/uploads/Josh1980/2013-01-06_162536_rps20130106_144907.jpg)
All these Micro-Pistols are "Ammo Sensitive". My Seecamp 32 loves Speer Gold Dots, but everything else is a 'Maybe'. My Ruger 22 pistol is a jamamatic with anything other than CCI 22s. Then you have the recoil factor. Armscor has come up with the 22 TCM, just a necked down 9mm shooting a 40 gr bullet. Pre-ammo crisis you paid $20 a box.
I bought a Sig 232 (Walther PPK type) and it took 200 rounds, and two factory trips, to get it to work. The 22 TCM takes away the variables with 9mm or 380s - (powder loads, hard primers, bullet weight, casing material). The present custom ammo is expensive - $40 a box. Even KelTec says it prefers the custom ammo.
The TCM 22 is a factory round made by Armscor. Maybe a thought for Rorhbaugh as to recoil, and a stock bullet