I want to make a few 44 MAG wrist breaker cartridges as a "That's not a knife, this is a knife" type thing for the guests that I bring to the range that want to shoot "the big stuff". It has to be something that a six inch Smith and Wesson 629 can handle as I know the 629 is a little more delicate when compared to the Ruger revolvers that are built like tanks.
What powder and bullet combinations have you all had success with when it came to making a few punishing cartridges?