I've taken some young guys I play golf with and we've set up and run some "stages at the range" with their .22 caliber guns. Just for fun and it's gotten into their blood and might encourage them to get into USPSA. Maybe we could do some "unofficial .22 shoots?" Just a thought, please don't execute me for suggesting such a thing, just throwing ideas out there.
Check out Steel Challenge they have a 22 Rimfire Division.