My CZ-75B shoots REAL well with Fiocchi(Italy) and GECO (Germany). Very, very accurate with both, 2.5-3" groups at 25 yards.
It "hates" UMC amd most of the other relatively cheap standard velocity commercial U.S. made ammo. Definetely ubderpowered ammo, and it's known thaat CZ
likes hotter ammo....
Wolf ammo works fine and produces the biggest kick, although accuracy seems to be
not as good as with Fiocchi and GECO.