blades67 has the best advice. IPSC has several different categories to compete...
Open--optically-sighted, compesated, hi-cap "raceguns".
Limited--single-action autos w/o optics & compensators. No capacity limit.
Limited-10--same as Limited, but capacity limited to 10 rounds.
Revolver--DA or DAO. Limited to 6 rounds
fire: ), no optics or compensators.
Production--DAO or DA/SA autos. First shot MUST be DA. 10-rd. mag limit.
The Beretta would be good for Production class, but you could use the CZ for Production or the Limited classes (unless it's a D-model=Production).
I currently compete in Limited-10 w/ a 1991A1 & 10-rd. mags. I have competed in Production & Revolver too. I enjoy it all (except for the stupid Revolver rule
).
A few tips...
1. !!!FOLLOW ALL SAFETY RULES!!! The quickest way to be escorted out of the range is to break one of the FOUR RULES OF GUN SAFETY.
2. Bring plenty of reloads. In autos, have at least 3 mags in addition to the one in the gun. I usually have 4-6 on my gunbelt--and I have sometimes used ALL of them...
3. !!!FOLLOW ALL SAFETY RULES!!!
4. Listen to the veteran shooters. You'll learn a LOT.
5. !!!FOLLOW ALL SAFETY RULES!!!
6. HAVE FUN! Some of these guys take it way too seriously. Don't be one of them...
Enjoy...