mlaubner,
Looking at your profile I get the impression that you are on the ball so to speak.
To really enjoy this game you should make up your mind that you will try to fit in and enjoy the shooting. In the area that I live the clubs for the most part use the classes of different organizations but try to be flexible so that everyone can play some how. After a few changes that may be necessary I' m sure that you will find a place to compete. When hunting season rolls around you will see that your skills may have improved and again the deer have a entirely different set of rules that do not pertain to your equipment or shooting style. Good Luck and learn to smile so that later you will be able to laugh.