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Claim 1

A SHOTGUN CARTRIDGE COMPRISING A SHOTSHELL BODY WITH A HEAD AT ONE END AND AN OPEN MOUTH AT THE OPPOSITE END, PROPELLANT EXPLOSIVE MEANS POSITIONED IN SAID BODY, PRIMING MEANS IN THE HEAD COOPERATING WITH AND IN COMMUNICATION WITH SAID PROPELLANT EXPLOSIVE MEANS, A CLOSURE MEANS SLIDABLY MOUNTED AT THE MOUTH END OF THE BODY AND ADAPTED TO BE EXPLOSIVELY PROJECTED THEREFROM, SAID CLOSURE MEANS COMPRISING AN INVERTED CUP OF POLYETHLENE PLASTIC MATERIAL, SAID CUP HAVING A TRANSVERSE CLOSURE MEMBER AND A REAWARDLY-EXTENDING TUBULAR WALL PORTION, SLIT MEANS IN SAID TRANSVERSE CLOSURE MEMBER CONNECTING WITH SLIT MEANS SAID CLOSURE TUBULAR WALL PORTION, AN INTEGRALLY MOLDED SHOT CONTAINER MADE OF POLYETHYLENE PLASTIC MATERIAL POSITIONED WITH SAID BODY AND COOPERATING WITH SAID INVERTED CLOSURE CUP TO FORM A CHAMBER THEREBETWEEN, SAID SHOT CONTAINER COMPRISING AN ELONGATED TUBULAR WALL PORTION AND AN INTEGRAL TRANSVERSE WALL POSITIONED IMMEDIATELY ADJACENT TO SAID PROPELLANT EXPLOSIVE MEANS, GAS SEALING MEANS EXTENDING REAWARDLY FROM SAID TRANSVERSE WALL, A PLURALITY OF STELL SHOT PELLETS CONFINED WITHIN SAID CHAMBER, SAID CHAMBER BEING DEFINED BY SAID SHOT CONTAINER TRANSVERSE WALL AT THE REAR, SAID TRANSVERSE CLOSURE MEMBER AT THE FRONT AND BY A MINIUMUM OF ABOUT 0.066" THICKNESS OF PLASTIC AT THE SIDES SO THAT A MINIUMUM OF 0.060" PLASTIC IS POSITIONED BETWEEN THE STEEL SHOT AND THE SHOTSHELL BODY THUS EFFECTIVELY PREVENTING THE STEEL SHOT FROM COMING IN CONTACT WITH THE SHOTSHELL BODY AND THE GUN BARREL WHILE THE SHOT IS BEING EXPLOSIVELY PROJECTED THERETHROUGH.