Hmmmm.....let's kick over the cart...
Winchester Model 70--any model, because you just want the action--let's say, in .308 Winchester--used, about $450.00.
Ship off to Kreiger barrels, for a 1-10 twist double-cryo treated barrel, installed, with blueprinted action, chambered to your dummy round (probably Federal GM Match, or handload with the 168 grain MatchKing)--$500.00.
Ship off to McMillan, have their A3 stock installed, with cheekpiece and adjustable stock--around $400.00 (this includes bedding and floating)
Nightforce 8-32x56 NXS scope, with NP1 reticle, illuminated--about $1000.
Adjust trigger pull yourself, with a good trigger scale and two ignition wrenches to 2 lb. clean pull--total cost, about 5 minutes.
Total spent for a 1/4 to 12 MOA rifle--$2450.
And the other rifle costs $6000? Hmmmmm......