Not too much available new in blue/walnut for under $600. You could probably get a Browning A-Bolt3 for $560. The Tikka and Hawkeye $650-$700.
Used, most likely find something decent for $600.
Shoot shortactionsmoker,(aka Darrik), a PM and see what he can do for you. He hooked me up with a walnut/blued Tikka Hunter for a reasonable price along with excellent service.
SD