I believe the gun makers unwittingly killed it. It's a very cool outdoorsman’s cartridge for fun and for small game. It was however marketed as a defense cartridge almost 100% and put into short barreled revolvers.
I believe is S&W would have picked it up in a 5" J frame or even a 6" K-frame, both with thin light barrels, it would have sold very well.
If Ruger would have put a light 6" barrel on their GP101 in that chambering, I think they would have sold thousands of them. They could also have put it in a Single Six size gun and sold them well, (which I was told they did, but only in very small numbers)
Anyway.....my 2 cents worth....