When I first got my CZ 97 BD I believed the CZ website to be in error stating 10 + 1 capacity because I couldn't get a full magazine to seat with a round in the chamber.
I later discovered that the magazine seating force was substantially greater than that of my RAMI BD but if I "bopped" it firmly into place it stayed and functioned perfectly. Maybe the magazine spring is that much stiffer? Anyway, all is well, it just takes a "bop" rather than a thumb click to seat the big guy.
What a fabulous machine!