I have a CH 44 spc/mag sizing die that came with some misc dies. I went to size a 44 mag case with it today and it adds a slight shoulder and necked down the case like a 44-40. The neck starts about 7/8" to 15/16" from the rim of the case. Any Idea what this is other than a miss marked die. Thanks Tom
(Note added: I have been reloading for over 40 years, every thing was set up correctly)