Yeap!!!. Same story here. It seems that when it comes to magazines, CZ is not consistent at all. My guess is that they contract from different vendors/manufactures, and supply their guns with whatever the day brings. When I got my CZ 75 in .40, It came with two Meggar magazines (very nice and shinny), and I ordered two extra factory magazines (dull and with that *cut* in the middle. They all work, but I got mixed experiences with them.
When new it is almost impossible to load ten rounds in them, you are forced to use that plastic tool (supplied with gun, did you get it?), I kind had to force them in from the seventh and on with that tool, and left them loaded to max capacity for one day, after that I was able to load them to ten by hand, but it was still hard, so I left them loaded for a week (it kind of weakens the spring) and now they are ok.
Nice gun, what kind of groups are you getting with it?
Where did you get it from?
Welcome to the Club.
Carlos