a photo - degradable , molded , high strength plastic shotshell component having a degradation composition comprising as its combination of active ingredients linear polyethylene having a melt index of 0 . 1 to 5 . 0 and an ethylene - vinyl acetate - carbon monoxide terpolymer , the ratios by weight of which to said linear polyethylene is approximately 0 . 115 : 1 to 0 . 261 : 1 the ethylene - vinyl acetate - carbon monoxide terpolymer in its preferred composition has about 65 % by weight of ethylene , 25 % by weight of vinyl acetate , and 10 % by weight of carbon monoxide .