I've shot the auto, but never shot the revolver.
I bought it off a man who bought it brand new in 1976 and never fired it, so its still unfired outside the factory. I may shoot it at some point though.
Here's a few on GB, in case anyone feels like spending some money.
These three are the older design, which don't sell for as much. They also weren't as nice, in my opinion.
http://www.gunbroker.com/Auction/Vie...Item=344091484
http://www.gunbroker.com/Auction/Vie...Item=344339035
http://www.gunbroker.com/Auction/Vie...Item=344487995
Here are a couple of the newer design, but only rimfire. Again, they don't sell for as much as the Korth Combat centerfire models.
http://www.gunbroker.com/Auction/Vie...Item=344215172
http://www.gunbroker.com/Auction/Vie...Item=344524780
Here is an auto, which very rarely even come up for auction.
http://www.gunbroker.com/Auction/Vie...Item=344537250
Here are a couple used Korth Combats on another site. You can see the price difference.
http://www.collectorsfirearms.com/ko...agnum-pr23459/
http://www.collectorsfirearms.com/ko...agnum-pr23458/