My current thinking:
A WFN profile mold that casts a solid around 175 grains will probably generate something close to the classic 158 grain when set up with hollow point pins. That nose profile will avoid the "nose-too-long" potential of the 173 grain 358429 SWC. Alteration of alloy, charge, and nose would pretty much cover anything you'd need to do with a .357 save snakeshot. Not sure if any of the "mass production" houses are even into offering cast HP options, but it might be a line of research for you.