I bought a 30-06 BRNO Mauser for $250 at an auction with a scope. It's a beauty (sporterized) with jeweled bolt, nice stock etc. I have yet to shoot it. There's more out there.
I personally love Russian "junk". Cheap Romanian M91 or M44 in 7.62X54 for $100 and $100 for 440 military rounds. Of course deals are getting harder to get. I bought a marked sniper M91 Mosin Nagant for $150.
My bud just bought an Enfield chambered in .308. Hard to find, but gets the job done.