Maybe I have missed an explanation from being out of touch so long, but I have been intrigued for many years about the different Marks of the .450 Martini Henry Rifle cartridges manufactured by CAC Australia.
Three types are Mark A, Mark X and Mark Z.
Does anyone have any definite knowledge of the differences, if any, in these Marks. Or the meaning of the letters.
My initial guess was they represented the State for which they were produced (before Australian Federated), However both South Australia and New South Wales had Mark A produced which would seem to negate that theory.