One of the people I shoot with took some photos of the Tusco range and the different courses they have. I'm not sure if he wanted me linking directly to his page, so I copied some of the photos and captions and placed them on my photopoint page - you can get to the here:
As far as rifles, anything goes ... though most people had AR's there .. but there was everything there including people with bolt guns. You can take a look at the course in some of the pictures. My first outing with my AR took me 20 rounds to take out all the targets.
My only qualm with Sunday mornings is that I have church obligations so I can't make it out until probably early afternoon if I have to drive down to Tusco. The range is really a nice place - I was drooling when I first saw it.