Very cool! Thanks!
Will have to reread those posts a few times
Timing also refers to the cartridge coming up and into the bolt face/under the extractor correctly during the forward cycle of the bolt. This is the “controlled” part of the CRF. There are many, many CRF rifles that don’t do this and act as a push feed, the extractor snaps over the rim when the case headspace’s in the breech just like a PF.