I too have owned several 700's and they have all been shooters right out of the box except for one...a 7MM Mag...couldn't hit the board side of a barn from the inside! Sent it back to Remington and they replaced everything but the wood...said the barrel was bent and there was no sign of abuse...has shot MOA or better ever since. I still have that 7MM and a 270 which happens to be one of the best shooting rifles I have ever owned. If you have sent it back to Remington and even after a replaced barrel and trigger you have the same results? Gotta say there's not much chance it's the rifle at this point...try shooting some decent quality ammo (Core-Lokts are junk)...pick up a couple of boxes of ammo loaded with premium bullets (Barnes, Nosler, Speer, Hornady, etc...) in a couple different bullet weights and head to the range. I would also double check the scope...I know Lupy's are considered high quality scopes, but they have been known to fail (especially the lower end ones...VX I, II and III's)...I stopped buying Lupy's awhile ago after having a VX-III fail on my 7MM Mag (retical failed due to recoil), IMO they aren't as good as they once were. Check all of the scope bases and mount screws (use blue lock-tite) as heavier recoiling rifles do knock scope bases/rings lose at times...especially if you are using the Lupy Dove-Tailed bases (double/triple check them for tightness) which is the reason I now prefer Warne and Millett rings/bases these days over Lupy's.

I personally suspect the ammo...not all rifles shoot everything dumped down the barrel well...

Just curious, what size groups are you getting?