Taurus does this kind of thing a lot. As was mentioned, you would think they would have gotten ATF clearance to build and sell the thing before they designed, built, and advertised it??? Something isn't adding up. They did this same exact thing with a .223, 5 shot "Raging Bull" revolver a few years back.
They even had the President of Taurus International on Tom Gresham's nationally syndicated radio show "Gun Talk", telling everyone how great it was going to be. I called in and asked him if they had any problems with set back. This is an issue that happens when bottleneck rifle cartridges are chambered in revolvers. Upon firing if the chamber has any oil in it, the case will set back against the frame, tying up the gun. This is the problem that ended production of the Smith & Wesson Model 53 .22 Jet revolver. He acted like he didn't understand what I was talking about.
He said the gun would be shipping in just a few weeks. You guessed it, it never made it to market. This newest fiasco with a 28 gauge pistol appears to be yet another flash in the pan from Taurus. Bill T.