Need some input on reloading the 9x57, I purchased 8x57 brass necked it up and it will not chamber in my MS1908. I had a chamber cast done and the bore slugged to confirm caliber. It seems to be the shoulder keeping it from chambering, does the 9x57 have a shoulder similar to the 9.3x57? I had some 9.3 brass which will chamber fine. I have ordered a case forming die, am I on the right track?
Thank you
Michael