Places in or near madison wisconsin that sell mosin nagants?

Find your local gun store. Chain stores like scheels don't carry them, but normal ones always seem to have a crate or two. Ordering online is another choice too. Just have them ship to your gun store, who may charge you an FFL fee. Enjoy. The mosin is ugly as a rats ***, but its fun as all hell to shoot!

I'm a few hours away from you in Green Bay. Do you have Mills Fleet Farm down there? That's where I got mine. They had 20 in stock, so I was able to pick through them and get one that was as near to "mint" as an arsenal rebult 1938 rifle is likely to get. They were on sale for $89 at the time.

Any Big 5's or other sporting goods stores in your area with a gun rack?

Try a gun store. And no, I'm not trying to be a smart butt.

I'm sure your local gun shop has a few in stock. Try http://www.yellowpages.com/