a lot of good options here. my personal favorite is the Browning A-Bolt II, but it's about $100 out of your price range. Other options are, weatherby vanguard, howa 1500 (same rifle but Howa is $50 less or so), Remington 700 SPS, Mossberg 100 ATR, and several Savage rifles.
i really like Savage and the Browning...however the Remington SPS is a decent gun too...just no bells and whistles, just a plain-jane rifle but with a very nice trigger after adjusting one screw a half turn...would take about 3 minutes. the savage of course has the accutrigger and the ability to change barrels/calibers anytime you want, with the barrel nut.
a used Encore might be a good buy too...
the mossberg i know next to nothing about but i don't like the looks...plus every 5 years or so mossberg comes out with some "new innovation" that no one buys and then they discontinue it and you suddenly have no parts or replacement, should you need a new gun for some reason.
the howa has been around forever, and the vanguard has the guarantee of 1.5 inch groups at 100 yards. both have a silky-smooth action and fit and finish is good...however i have had one howa and two vanguards and of the group only one (a vanguard) would live up to the claim. the others had bedding issues or other problems that made shots go everywhere.
you might also want to look at CZ. they make a 500-series rifle that is close to your price range and i have yet to hear a single bad thing about them.
-Matt