The more you can shoot anything, the better off you are I think. Recoil management is different with a .22, but I think that this game is more about seeing than recoil management so I would say anything you can can do to work on seeing, e.i. watching the front site bounce around on a .22. Firing a .22 is cheap fun and I agree, buy as many mags as you can. It is not a substitute for firing your IPSC gun, but if it is the choice between, firing a .22 and firing nothing (because of cost) then shooting the .22 wins in my book every time. I have a Kimber conversion and the sight are set up just like all my limited guns, seeing is BEing.