Get a Remingtion 700 SPS in 300 win mag. 450-550$
Replace the stock with a used HS precsion there are allot of them for sale just ask the members what thay have to sell you. I got one for my build from a member for 200$ never even used.
Bed the stock and have the trigger tuned down.
Spend the rest on the scope, rings and bases. Check out www.thesamplelist.com
it the the dealer samples from riflescopes.com
Get a harris bipod.
There you go for targets and everything else you can think of