A shotshell having a maximum interior volume is disclosed comprising a tubular casing wall made of the biaxially oriented high density polyethylene, and injection molded basewad also made of high density polyethylene molded in place at one end of the tubular casings to close the end. The basewad has a skirt portion fused to the tubular wall to bond the basewad and the tubular casing wall together while maintaining the biaxial integrity of the tubular casing wall.
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