Is this a cartridge or cartridge related No. 2


Here is the second unidentified “cartridge” I got from the Buttweiler bin sale.

Dimensions are as follows:

Length: 0.834” (16.11mm)
Rim 0.277” (7.04mm)
Base: 0.245” (6.22mm)

The rounded “bullet” is in the rimmed end of the “cartridge”. The other end is sealed with a red fiber wad.

Is it ammunition??



Ah now, you’ve got me with that one.