CraigC
Sixgun Nut
The K-frame is not a Charter. A K-frame cylinder is just a hair larger in diameter than a Single Six's. A Single Six is a better platform for an oversized cartridge due to its design. That it needs only a basepin for the cylinder to rotate on, rather than an ejector assembly. It also allows for the frame window to be opened up for an oversized cylinder, both in diameter and length. You can also enlarge the loading port and barrel shank if necessary. You can't do that on a S&W. The largest cartridge that can be safely stuffed into the Single Six is the .41Spl. Even then, pressures must be kept low. The cartridge can be pushed to 1200fps in stronger guns. So no, S&W will never offer the K-frame in anything bigger than .357, which is already pushing it. No gunsmiths that I know of are building custom five-shot cylinders for S&W's anyway.Well, the cylinder may be "A" problem but in all the years I have shot and worked on revolvers I have yet to see a Charter Pug with a blown cylinder and they have some of the thinnest cylinder walls out there.
I agree that the forcing cone is probably the biggest limitation.
I wouldn't call it dead and I know of quite a few shooters who'd get in line for a .327 in a proper sporting length K-frame..327 is dead, so I don't expect S&W to chamber anything new in that caliber.