A number of years ago i got this new primed empty from a Buttweiller auction. It was reported to be from the SFM Reference collection. Along with the cartridge came an old green label and on the back of this label was a white sticker with “ZX09” printed on it.
Rim: 15.64mm (0.6125")
Head: 13.15mm (0.5170")
Case Mouth: 12.05mm (0.4760")
Case length: 35.15mm (1.3820")
Referencing “Cartridges Cases” by Andresen, Andresen and Stromstad they appear to identify it as a 11.5 Werder Carbine/“Lightning” Pistol.
What was the “Lightning Pistol”?
Was this case manufactured by SFM or was it competitors reference sample?