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I don't think the new owners are reluctant to mention what RC their axes are, or what steel. My guess is they're either marketing their items to the overwhelming majority of folks that don't know/don't care about what that stuff means, or they are underestimating how important it is to "our crowd." Possibly both. That doesn't necessarily mean that they aren't good. That being said, I don't have personal experience with them other than dry-handling and that doesn't tell me anything about the steel.
Scouter 27: I checked out the Council standard HB axe, but like you, I prefer a slightly longer handle, I guess I could rehang it with a longer handle, but it's lookin' like the Council Velvicut 2# Premium HB might be the axe for me. I am looking for a quality axe to bridge the gap between my S&N Forest axe and my Hults Bruk hatchet.
That's a pretty significant difference in carbon content, I would expect the 4140 is pretty soft, down near 50. I'm surprised that the USFS was that high, that seems like it would be kind of above and beyond.