Hello Scrummy
I). You asked about 7x64*...
1. From left to right: DWM M 1908, Mauser M 66, Sauer 80
2. DWM M 1908, a "bit shortened & reamed up" (from 7×57 to 7×64)
3. Handloads for the DWM (= "The Family M 98"):
9g (139gr) Scheibengeschoss for "making cheap holes in paper"
175gr ("old...