ORIGINAL: eldeguello
Never owned a 700. But did have two of its' predecessors, a 721 in .30/'06, and a 722 in 222 Rem. Had extractor trouble with the 721. No problems whatsoever with the 722, though. In addition, using a 55-grain bullet, that 722 would shoot all its' bullets thru a nickel-sized hole as long as you kept shooting.....
I had a 721--.30-06, and 2 722's--.222, and .244. I never had a problem with either of the 722's. but I too had extraction problems with the 721. The extractor would sometimes slip over the rim, leaving the fired shell in the chamber. This was not an unknown problem in the 721, and occasionally showed up in the 760, as well.
I believe that Remington made a change in the shape of the extractor when they went to the 700. Anyway, I have had 5 700's (still have 2) and have never had an extraction problem.