Sierra gives a pretty nice tour all through the plant and the bullet making operation. All except the tool and die makers shop, I don't think the machinists let even the owners in there!
The range is pretty interesting; it looks pretty much like the reloading room anyone here owns, except for the rifle bench and access to the range. There's a reason it's 300 yards long; the ceiling is too low to shoot the entire length.
Then, you go around to the door on the West side and enter the store where you can buy bullets by the pound. Good bullets, but you have to cull the obvious junkers.
Definitel worth a couple of hours if you're in the area.
Starline Brass is next door; I haven't been in their plant, but plan to stop by the next trip I make up there.