What about Bullseye Shooting.
A great dicipline that will teach you trigger control- pretty important in all the other diciplines.
There are almost 14 times more classified Bullseye shooters than action pistol shooters.
There are three gun catagories to be used in competition (22, center fire, and 45 acp). You can cover all the bases here with a 1911 and a 22 conversion unit.
Here's a good link for info.
http://www.bullseyepistol.com/
Good luck in which ever direction you go!