I was thinking about this as I couldn't find any ammo around town
Maybe IDPA could offer an option for matches or clubs could. How about a one head shot run. No double taps, or Mozambiques. At your option just to get some trigger time but with a modicum of difficulty - each target gets one to the noggin.
One could limit semis to 5 founds in the mag and start with 5+1 to keep the reload flow going.
Or the other option is to have a 22 LR division or allow it at club matches. I guess one could shoot it that way on your own and get scored down but why not try it?