You can shoot in IDPA, USPSA as unclassified until the cows come home without issue. Some clubs will let you shoot without being a card carrying member of the discipline
NRA Life Member, NRA Range Safety Officer, NRA Certified Pistol Instructor, IDPA Safety Officer, USPSA NROI Range Officer,
ICORE Range Officer
As you are, I once was, As I am, You will be.