While I think the 547 is cool, Personally I much prefer the moon clips. With a moon clip enabled revolver cylinder chambered for 9x23 Winchester you end up with a revolver that can safely chamber and fire 9x23 Winchester, 38 Super, 38 ACP, 356TSW, 9x21, 9MM Parabellum, 380 ACP and more

Is there such a gun available?