Taurus made some revolvers; running from snubbies to 12" barreled silhouette guns in .17 HMR, and ended up dumping a lot of them at CDNN. I think it's a good cartridge with some potential, but not as a self-defense round. Velocity is there, at least in longer barrels, but not bullet weight.
However if someone thinks differently, CDNN has some flaming deals.