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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hand Lapping Barrels
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<blockquote data-quote="J E Custom" data-source="post: 1347261" data-attributes="member: 2736"><p>This is the reason I use several laps. As you lap a barrel, the lap wears</p><p>down and must be replaced. the hardness of the lap has to be just right to let the compound imbed, but not soft enough to get dinged up or deformed easily. I don't find a lot of leading to the barrel because the lead that wears off tends to be transferred to the compound and is removed every time you clean the lap and the barrel during the process.</p><p></p><p>I use a hard lead alloy (Like I use to cast bullets) for final finishing lap, using a non embedding compound for the best finish and the most accurate dimensional control. also, A mirror finish is not desirable because it can foul and reduce velocity. And a good honed finish is best (Just like in chambers).</p><p></p><p>Lapping can be laborious and time consuming if done correctly. So I only recommend it as a last resort on a completed barrel. Best thing to do to a new barrel is to do a shoot and clean brake in and let the bullet do the work. Cleaning often exposes the tool marks and aids the bullet in smoothing everything out.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1347261, member: 2736"] This is the reason I use several laps. As you lap a barrel, the lap wears down and must be replaced. the hardness of the lap has to be just right to let the compound imbed, but not soft enough to get dinged up or deformed easily. I don't find a lot of leading to the barrel because the lead that wears off tends to be transferred to the compound and is removed every time you clean the lap and the barrel during the process. I use a hard lead alloy (Like I use to cast bullets) for final finishing lap, using a non embedding compound for the best finish and the most accurate dimensional control. also, A mirror finish is not desirable because it can foul and reduce velocity. And a good honed finish is best (Just like in chambers). Lapping can be laborious and time consuming if done correctly. So I only recommend it as a last resort on a completed barrel. Best thing to do to a new barrel is to do a shoot and clean brake in and let the bullet do the work. Cleaning often exposes the tool marks and aids the bullet in smoothing everything out. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hand Lapping Barrels
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