bluetick, I'm a bit confused by your explanation of CRF and PF. With Mauser 98 actions one had to feed the ammo throught the magazine. If you dropped one in the chamber, you couldn't close the bolt, because extractor wouldn't push over the base to get into its groove. OK, you could slam the bolt over it, but not recommended. When I wanted to seat bullets too far out to work through the magazine, I would take the bolt out, push the cartridge under the extractor, then slide the bolt back in the rifle.
When the new type bolt face came out, I think it was mid 60s, it was heralded for ease of operation, by just being able to drop a cartridge into the chamber and close the bolt. Also, the new type was advertised for greater safety, because the base of the cartridge was enclosed in a steel ring. I have used several examples of each type, and don't really have a preference for one over the other.