Just saw this thread. I guess "the bad" is on me seeing this is in the rifle forum! OOPS! I wonder if the OP is still interested in this topic!
Well, as the new kid on the block, I can answer this one.
For the purest in the PPC shooting discipline, there will never be a auto involved in it!
I'm not one of those though. There are leagues nationwide still for this sport.
I help run a local league here in Northern Indiana. We, our shooters and I, shoot autos from time to time. To keep things on an even keel, we limit magazine capacity to 6 rounds each. That way the revolver guy isn't hampered if they still want to compete.
I hope that answers your question about PPC. Most of the bottom feeders that compete have moved on to the more "action" type of shooting. IDPA or IPSC.