The American Defense Academy is holding its monthly 3 gun event.

http://www.theamericandefenseacademy.com/ then go to "Events".

Starts at 10 am and small groups will be run through at at time, so you can can come at anytime and shoot.

You can use any semi-auto pistol and rifle of any caliber so long as they are magazine fed (Speed loaders and clip fed are ok to use) and you have 2 magazines.

So .22 is just fine, and if you are really 'kewl' (I'm hip to that) you would use a Garand and 44 Mag with speed loaders.
As for the shotgun, once again, anything you have, maybe you could show up those "young whipper snappers" by using your old hammerlock side by side.
As for me, It will be a Glock, AR and Remington 870.

This is fun for beginners, my first one was in November. Family members are welcome to join or just watch (eye and hearing protection is needed).

I hope to see you there.

Just a heads up, NEXT Saturday May 24th is the monthly 3 Gun shoot at the American Defense Academy.
http://www.theamericandefenseacademy.com/
You can shoot at 10 am or 1 pm. As usual, I plan on shooting the 1pm  timeframe.?