Buffalo Arms Company Precision Swaged Paper Patch Cup Base Bullet .365" diameter, 1.00" long and weighs 250 grains. These bullets are swaged from certified virgin PURE LEAD extruded wire and are cup based. The swaging process virtually eliminates problems with cast bullets such as voids, irregular hardness and grain structure, air pockets and mould lines. These bullets are NOT PATCHED (item #PPPAPER).