Here are two examples of 1000 yard rifles.
These do break the bank I'm afraid.
International PALMA Rifle Chambered in 308 Winchester.
This is another PALMA rifle with a synthetic stock. The young stud holding it is Kyle Leibertrau, last years Junior National Champion and the 2007 World Champion in both the Jr individual and team events. He is the captain for the US Jr. PALMA Team.
While all this may sound interesting, the impressive part is this is all done without bi pods, sand bags, or machine rests. It's two hands and one shoulder.
With Iron sights only.