Hello Dean ,I Do Not have the answer to your question but I have the best book to look up Gun Terminology ! This book is " The Firearms Dictionary " ,written by R A Steindler and sold through Stackpole Books and has a copyright of 1970 ! I looked up " Relined " and it is not in the definitions category ! I would have no idea myself but I don't believe it was an exact terminology such as Choke ,Boring etc. ! Good Luck in your search ,very interesting !
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