I have some older drillings that are chambered for 9.3x72R. I have dies for 9.3x74R. I am aware that the 9.3x74R is substantially more powerful than the 9.3x72R and not to mix these as it would be extremely dangerous to try to put a 9.3x74R in a gun chambered for a 9.3x72R.
But, would my dies for a 9.3x74R work for a 9.3x72R?
I may be shooting 9.3x72R with black powder.
The cartridges look similar.