These cartridges are on the original charger which is marked: D.M. on an oval frame. The headstamp is: K DWM K 528 with a small “T” on either side of the DWM. The two T’s are the date code for 1927 and 528 is the DWM case number. The primers are flat brass and the bullets are soft points.
The chargers were also used for other cartridges with similar rim dimensions. Does anyone have photos of any others?