One thing I can tell you is that we have about 10 or 12 different mauser actions here in our shop for programming and fitting purposes. Many are old mititary actions, some are early Husky's, some FN commercial. Every one that has a thumb cut has the stripper clip slots cut in the rear ring. All the ones with no thumb cut have no stripper clip slots. The correlation is 100%. I suspect this should tell us something. I wonder about depressing the cartridges from the stripper clip into the rifle with the left hand. I seem to want to do this with the right hand, but based on the thumb cut perhaps it was intended to be one with the left.
Dick at McMillans