Bgjohn, I have a CZ 527 in 7.62x39 and cannot speak too highly of it. I'm primarily a cast bullet shooter and this is the best cast bullet rifle I have ever laid hands on. What little hunting I do is woods hunting for eastern whitetail and the 7.62x39 is plenty of cartridge for that.
The rifle came with a test target showing a 5 shot 3/8" group at 100 meters. I can't get an answer from CZ as to what ammo they used, but I was not really planning on using jacket bullets, anyway. I am getting 5/8" 50 yard groups with casually assembled cast loads and am delighted at that.