Table of contents Barrel fitting Shotgun barrels Barrel turning Thread dimensions Thread cutting Thread cutting in a lathe Thread dial indicator Cutting the threads Thread chasing Threading and fitting Fitting the barrel to the action Checking the head space Barrel inserts & liners Relining barrels Making 22 rf liners Barrel straightening Barrel presses Beginning tool making Typical tool steels Water hardening tool steel Making reamers Tempering the reamers Making a chambering reamer Bushing firing pin holes Thread cutting terminology Taps and threading