Accuracy with my M70 is amazing and I am very impressed. Its the most accurate 7.62 AK I have ever owned. It out-shoots my Norinco Type 56 by about an inch or so. All of my accuracy results have been conducted with Golden Tiger, because thats all I have left right now. Silver dollar groups all day long with my Yugo.....I wish I knew more about them, though....Mine clearly has a chrome barrel, while others do not and I am pretty sure Century wouldn't know the exact chamber specs. I called to order a push pin assembly for my top cover because it popped off during some bump firing from the hip and it was a nightmare just to talk to someone who knew what I was talking about. You could try calling them and play the "transfer/voice mail" game and hope you talk to a knowledgible party....Although, Jennifer was very nice and helpful....so big ups to her.
All I can tell you for sure about mine, and other Century M70's I have seen is that they are awesome. For the first time in months, I don't wish I had a Vector under-folder.