John K. - I have the following Australian .45 Mark IZ and Mark I cartridges in my collection. All have brass cases with a knurled case cannelure, GM FMJ RN Bullets, copper primer cups with what appears to be a ring primer crimp, and purple primer seals, unless otherwise noted. These are the only .45 Automatic cartridges from Australia that I have seen or know about:
Ball - MG 43 IZ
Ball - MG 43 IZ (larger headstamps letters)
Ball - MG 43 .45 IZ
Ball - MG 44 .45 IZ
Ball - MG 44 .45 IZ (smooth case cannelure)
Ball - MF 56 .45 I (No case cannelure)
Dummy - MF 56 .45 I (empty, Berdan-type pocket primer, no case cannelure,
5 small holes in case, staggered High/Low, and an internal red-wood spacer to prevent bullet set-back apparent thru the case holes).
Dummy - E C 42 (steel case, no case cannelure, snapped original copper
primer cup, 4 small holes in case space equidistant around the case all at the same height),
Commercial ball round(?) - W-W 45 Auto (Brass case, FMJ or Monolithic projectile that is totally tin-plated, or otherwise plated to a silver color, RN with flat base - I have a separate projectile as well. No case cannelure,
nickle Boxer primer cup, no primer seals).
I assume Doc Av has made blanks also, but I don't know of any in collections, at least in Europe or USA.
Doc Av - Do you have documentation for dummy rounds made at MG (you said "MF" but I assume you meant MG considering the dates mentioned) made in 42, 43, and 44? You say they "certainly do exist" but that you have not seen one. I have not seen one either, and know of no one else who has. You also mention MF 43 ball rounds. I am not aware of any production of .45 by MF until 1956. It has always appeared that MG was the only producer of this caliber during the War years. Of course, this leaves us back again, as with some other threads, faced with the bugaboo that you cannot prove (or disprove) a negative. Still, there must be some source for your information on WWII MG-made dummy rounds?