1. A plug of proper diameter that is inserted into the neck of a resized cartridge case to expand the diameter to allow the case to accept a bullet. 2. A tool used to remove dents in shotgun barrels.
EXPANDER PLUG
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1. A plug of proper diameter that is inserted into the neck of a resized cartridge case to expand the diameter to allow the case to accept a bullet. 2. A tool used to remove dents in shotgun barrels.