Patent ID: 11933593
Assignee: FEDERAL CARTRIDGE COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 8:
9. A shotgun shell cartridge comprising:
a casing comprising a primer;
a shot wad positioned in the casing;
a biodegradable spacer comprising corn byproduct, the spacer being located within a rearward portion of the shot wad;
a biodegradable fiber powder wad comprising wax evenly distributed through a cellulosic fiber located inside the casing, rearward of the shot wad, the biodegradable fiber powder wad having an annular depression in a rearward-facing axial end and a ring located radially outward from the annular depression; and
a propellant housed in the casing, rearward of the fiber powder wad.