Using my CZ-clone Tanfoglio, I shoot USPSA
I shot some IDPA, but it withered and died around my area.
Might I suggest investigating your local
options here? www.uspsa.org
(okay, I also use or have used Glocks and 1911s and GP100s and Redhawks and an STI once, in 9x19, 9x21, 38 Special, 38 Super, 357 Magnum, 40 S&W, 400 CorBon, 10mm, 41 AE, 41 Magnum, 44 Magnum, 45 ACP, and 45 Colt)