Hmmm...You just want a serviceable bolt action rifle to get practice shooting and manipulating the action? I'd get a Yugoslavian Mauser (M24 or M48) or a Mosin Nagant of whichever variety. The Mauser will be a little higher quality, the Mosin a little cheaper, probably.
I'd look around at the gun shows or shops that carry surplus and find a decent one for under $150. Then spend the other $350 on a butt-load of surplus ammo so you can get all the practice you want.
When your skill levels develop and you discover more specific interests, you'll probably have developed the knowledge and aesthetic tastes to be able to select your own "next" rifle.
With a surplus battle rifle like those, you aren't spending much cash, ammo is pretty cheap, and you can do a little "lite" gunsmithing if you want to clean up/refinish the stock, clean out all the preservative grease, etc.
Can't go wrong buying one of those. (Just don't pay the $$$ for a Mitchell's Refurb job.)
-Sam