the .327 Federal Magnum?
Two or three years ago, I went into the little local gunshop, and asked the lady (owner) behind the counter to show me a Ruger SP101 in .357. She pulled one out in .327 Mag, and said that this was all they carried the Ruger in now, "because everyone wants one and everyone is asking for one!"
I replied, "What happened? Did they discover that the .45, .40, .357 and .38 don't work anymore?"
She frowned and I left.