Which model do you have in mind, the ZKK 602? I had two, one with build in peep and one without. Six rounds of 375 H&H in the magazine, very impressive and comforting!! It's not a true mauser, lacks a few designs from mauser and got some features that resembles Winchester model 70. Compared to CZ550 I think they are pretty much the same in terms of quality, ZKK trigger is "over engineered" varying fit and finish, lightning cut on the left side of the receiver did not improving it looks. CZ550 got the ugly bill board text, over engineered trigger and mediocre quality control. Safety’s isn't to my taste, either mauser flag or win 70 style. Both got ghastly looking bolt shrouds. With Winchester being "absent" CZ got a great opportunity to take a larger share of the market, if they copied the model 70 trigger, safety, removed the bill board text, plastic parts and a better stock pattern it would be a attractive rifle, even if prices went up. There are few rifles from the assembly lines that I could think of buying,… I don’t get any warm and cosy feelings while handling Sako 85, Tikka T3, Blaser r-93, Savage, Steyer, Ruger 77 mk2 or Remington. Most I wouldn’t touch with 10 metre stick.
ZG-47 and Brno 21/22 are top notch rifles, hopefully the tooling is there


Cheers
Johan