Yes, that must be why I can't find any replies. If anyone else is interested, I talked to someone at the Carlisle Fish and Game Assn., in Carlisle, PA. They have a sporting clay range which is open to the public on Wednesdays from 1:00 on and on Saturndays from 9:00 to about 3:00. $9 for 50 birds. If it doesn't rain tomorrow, I plan on driving up there; looks like a little under 2 hours from Baltimore.
Here's a great website on the subject:
http://www.claytargetsonline.com/ Clay sites are marked on the map so you can find one near you. Underneath the national map are links to the various state maps; clicking on a dot brings up information about that site.