Getting ready to load for my 1910 M-S. I have seen the cartridge described as both 9.5x56 and 9.5x57. Looking at the RCBS catalog they list both, 9.5x56 (die set number 56447) and 9.5x57 (die set 56448). Called RCBS to ask which die set I needed and the person answering the phone could not help. I am supposed to be getting a call back from a more technical person but that has not happened yet. Any one loading for the M-S 1910 and know which die set I need?

Just got a email from RCBS, the die sets are identical so either one will work