| 摘要 |
A wad for a shotgun shell comprising a polyethylene unit having an obturator wad connected to a shot pouch by a generally helically extending compression spring member, the flights of which are maintained in spaced relation by axially extending strut members arranged to cause the spring member to increase in radial dimensions when compressed in an axial direction and thereby scrub the barrel interior as it leaves the latter upon firing of the shell.
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