With a revolver the only real limitation is the length of the cylinder. But I cannot see any reason to built a 230 gr. .357. Marketing is a powerful force. For bowling pins you cannot beat a .45 ACP revolver. Or a .41. Or a .44.
The 230gr. bullet is a lot of mass in motion, required for bowling pin matches. The advantage of such a bullet in .357 is that it can be fired in an L-Framed Smith, while larger calibers require N-Framed guns. Many shooters, including this correspondent, cannot handle N-Frames guns in fast DA firing as well as the L-Frames.