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SHOP SOLUTIONS


winning scores may be separated by thousandths of an inch, a few millionths of an inch improvement in the unifor- mity of a Pac-Nor barrel may make a big difference for a skilled shooter. Manufacturing precision rifl e barrels has always been something of an art that involves hand lapping of the bore surface twice, before and after the rifl ing profi le is cut or swaged in by a rifl ing button. In fact, a bright, hand-lapped bore is considered one of the hallmarks of a precision rifl e barrel, despite the inherent variations from manual work done by people who get bored and tired from the monotonous chore. More than a year ago, Pac-Nor Barreling set its sights on this issue and hit the X-ring with the newly developed HTE honing


Barrel blanks are securely held in a three-jaw chuck with oil pumped into one end while the tool works from the opposite end. Sunnen’s Long Bore Tool uses metal- bond diamond or CBN superabrasives to quickly remove reamer marks, waviness, tight spots, and other imperfections left by upstream processes.


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&DOO RU See us at 42 AdvancedManufacturing.org | July 2016


• VDOHV#PDIRUG FRP • ZZZ PDIRUG FRP Booth #W-2374


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