One-piece wad structure adapted for reloading of hard shot

Details One-piece wad structure adapted for reloading of hard shot One-piece wad structure adapted for reloading of hard shot

1986-06-12

1987-06-30

Tudor, Harold J.

Ammunition and explosives

Cartridges

Shot

102532, F42B 700

Patent

active

046761705

ABSTRACT:
A one-piece, elongate, tubular shot shell wad structure, for use with ferrous metal and other hard shot, having a shot cup and obturating cup separated by a relatively small distance and yet having a cushioning capability for limiting peak powder chamber pressure upon firing and reducing choke strain. The cushioning structure comprises a specially formed annular depression formed in the exterior surface of the wad structure located at the juncture between the shot cup and obturating cup. The depression cooperates with the tubular wall of the obturating cup in such a way as to provide not only cushioning but also improved sealing upon firing. The shot cup has a hemispherical bottom surface which, despite the presence of the cushioning depression, does not undergo any substantial deformation upon firing and is therefore effective to further reduce choke strain.

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