Jason: that's quite a idea but I don't think anyone has gotten around to that sort of a thing yet. It might happen though. It seems as though Americans have a tendency to wildcat any cartridge that comes out, so if we just wait I'm certain we will hear of or see one.
I'm certain you could probably get 'screamin' velocities, for a pistol cartridge, by necking it down a 5.7 to 17 or 20 caliber and I'm certain it would probably shoot accurately too and then what you would have, by your own description, is a little caliber for small game. I think I'll wait until one of the new Kel-Tec 22 Magnums hit the shelves though to purchase something more space age than my 1911...
As to someone who could rebarrel - actually, cut you a new barrel that you could install yourself - check out the Graybeard sponsor list, we have more than one barrel maker and I would suggest checking with them first to see if they could/would maek a different caliber barrel for the five-seven pistol.
I think the Chinese (Red, Commie types) also make a pistol in a 5.7 caliber but I seriously doubt we will ever see one here for a loooong time. jmtcw.
