rhm,
I don't know if there is a misunderstanding here about semantics, or what, but I will try to explain the differences between the three basic post-64 Model 70 action types. The picture of the bolt face you show, is a standard push feed Model 70. It is NOT a controlled round push feed (CRPF).
The push feed (PF) Model 70 dates back to 1964, when the pre-64 Model 70 was discontinued. This featured the "ring of steel" bolt face with a plunger ejector and the small rotating extractor fitted into the right bolt lug. Some feel this extractor is superior to the 700's little spring extractor.
In about 1994, the Classic action went into regular production. (Although the Classic action was available earlier on a limited basis in Custom Shop rifles and Super Grades). The Classic action is controlled round feed (CRF), resembles the earlier pre-64 action, but is not identical. The CRF Classic action is easily identifiable by the large non-rotating claw extractor and the blade ejector.
In 2003, the controlled round push feed (CRPF) was introduced. This is essentially a modified push feed action. The ring of steel is relieved along the bottom of the bolt face, flush with the bolt face. This allows a cartridge to feed UP from the magazine, flush with the bolt face, and the rim of the cartridge to slip up behind the extractor, thus allowing for controlled round feed, rather than a push feed where the cartridge is pushed into the bolt face and the extractor snaps over the rim when the action is closed. Also the plunger ejector is replaced with a blade ejector, and thus the bolt face has a slot for the blade ejector right about in the same position as the plunger ejector would be on a push feed. The same rotating extractor is used as in the standard push feed model.
Winchester claims that the CRPF action allows for a controlled round feed action, that will still single-feed a shell directly into the chamber. This in itself is somewhat of a mystery to me, as my older Classics (mid 1990's production), which are a 7mmRM and a 300 Weatherby, allow a cartridge to be slid directly into the chamber by hand, the bolt closed on it, and the extractor will snap over the rim. However, when I got my first WSM in a Classic action, the bolt could not be closed on a shell in the chamber, unless I used an old trick to get the extractor to snap over. Late production WSM's and WSSM's that have the upgraded machined steel extractor, I can't even get the old trick to work, because the newer extractor is stiffer, apparently. I'm not certain as to why the claw extractor on a Classic CRF action won't allow single-feeding with WSM's, but it may be the fact that the rim on a WSM is .535" in diameter, while a standard magnum caliber has a rim diameter of .532", I believe. I think it is much ado over nothing, except it does reduce the overall cartridge capacity of the rifle by one, if all cartridges must be fed from the magazine. As far as I am aware, this single-feeding issue with Classic actions, applies only to the WSM's and WSSM's.
Hope this helps, and doesn't just confuse the issue more!
