Here is what my current build looks like , parts are gonna start heading to Nathan Dagely's (308nate) shop soon I hope
Phoenix reciever with side bolt release , 1.403" thread tennon , .312" recoil lug pinned , round top with target port for rigidity and a thicker Remington style tang $437.50 shipped to your FFL of choice.
Pacific Tool and Guage bolt , TIG welded bolt handel with threaded end for several differant bolt knobs , M-16 stype extractor which in my finding is the next best thing to a full control round feed action , cost is right at $200 for everything and welding.
Top quality barrel from maker of your choice $325 shipped
Seekins detachable bottom metal +2 extra mags and his base made for this action $510.46
Manners T4 stock with adjustable comb $615
Add another $400 for the action/barrel fitting and chamber plus bedding the action to the stock , and for right at $2500 you will have a gun built as good as any police , military or contract sniper could ask for fully capible for killing Elk at 1000yds providing the correct chamber.
Granted the above rig is an all out police sniper rifle chambered for 308 you could cut alot of cost probably right at $1000 just by using factory Rem bottom metal and an HS or Joel Russo stock. , Heck you could even go with a $150 Douglas barrel from Brownells and a factory take off laminated stock and save another $300 and I'd be willing to bet it would outshoot any factory rem out their.
Another option I'm thinking about if buying a Rem 5R rifle in 308 which are generaly great shooters from the box and open it up for a 300 WSM
But in any event you will be much happier with a custom action over a factory trued action for the same money and god forbid you have to sell it you'll get alot of your money back from the custom action over a built up factory one.