Palcher made .38 Special plastic cased cartridges are pretty well known. There are also .223 Remington plastic blanks in at least two variations.
Does anyone have a picture of a Palcher made 9 mm Parabellum? What about a ball loading in .223 Remington? Any rimfire?
Before you ask, I have no idea if these rounds were actually produced but these were illustrated in an early patent application wich was never granted.