It doesn't look like many people in here have one.
I like CZ's and think they make good firearms. As far as your symptoms I would carefully check the chamber for dirt, piece of brass, and/or absolutely no oil or grease. Is this a new rifle? I'm assuming these are factory rounds? Is the bolt possibly hanging up on the magazine/next round?
I have a big bore CZ550 and mine is a little ammo sensitive.
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