My only point was that the Kragbrass seems to last longer due to the measurement at the base, it is a bit bigger making the brass last longer for me anyways.
I have some 303 case drawings in front of me from the Hodgdon reloading book, the Krag brass measures 11.61 mm at the base, the 303 Britishmeasures 11.56 mm.
I didn't write the book by the way..........