In any case, I sent Ruger an e-mail myself. They've got a fantastic reputation for candid and quick answers to questions submitted via the website. I'll report back.
Okay, maybe I don't need to fully rescind that, but my experience was not supportive of it, anyway.
On 23/Dec/12, I sent this:
Long time Ruger owner/lover, and currently own seven Ruger handguns.
My concern is with the future of Ruger's production and backing of the .327 Federal Magnum cartridge.
According to the website, the Ruger GP-100 is -STILL- available in .327 Federal while the SP-101 and the stainless Blackhawk are no longer offered.
Is this a temporary unavailability, or have these models been scrapped in .327 Federal?
Concerned! Please don't give up on this cartridge.
The reply was dated today, 31/Dec/12:
This caliber has been discontinued for the time being only.
If you need further information, please visit our website at www.ruger.com or contact us at: