fabs,
I'm going on Fri. we went last year and it is impressive. Last year it wasn't complete this year there is now 2 sporting clays courses, skeet fields and the cowboy shooting area. I think the thing that got to me most was the camp ground. 1,000 camp sites and they were all FULL. Motor homes in excess of a million bucks, I saw one that was built from a semi trailer. Try this site and click on the shooting complex icon.
http://dnr.state.il.us/
I think it must just drive our anti gun weanie Governor nuts. (one term jerk I believe/hope)