Ammunition and explosives – Projectiles – Dumdum or mushrooming
Patent
1992-11-10
1993-11-09
Tudor, Harold J.
Ammunition and explosives
Projectiles
Dumdum or mushrooming
102501, F42B 1234
Patent
active
052593207
ABSTRACT:
A bullet is manufactured by providing a slug of metal having an end face and applying an axial force against the end face of sufficient magnitude to form an axially outwardly opening first cavity. Thereafter a second force is applied against the first cavity to reform the first cavity into a second cavity having a peripheral edge of a generally scalloped configuration and an interior surface defining tears of alternating triangular flat faces set-off by edges converging toward a blind end of the cavity. The end portion is then contoured into a generally convex curvature which constricts the scalloped peripheral edge and transforms the triangular faces into radially inwardly directed ribs and alternating lines of weakness which, upon bullet impact, control radial expansion and axial tearing of petals formed during impact which creates maximum hydraulic shock in the absence of fragmentation which in turn ensures humane killing of game.
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patent: 5101732 (1992-04-01), Schluckebier
"Styles In Small Arms Projectiles" by Green Army Ordnance May-Jun. 1932, pp. 395-401.
Barnes Bullets, Inc.
Tudor Harold J.
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