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Rifles, Reloading, Optics, Equipment
Gunsmithing
Lapping A Barrel
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<blockquote data-quote="J E Custom" data-source="post: 1786922" data-attributes="member: 2736"><p>I would not recommend trying anything but lead because when lead cools It also shrinks enough to remove it You might end up with a permanent plug in the barrel.</p><p></p><p>With lead, the small amount of shrinkage allows room for the abrasive and allows it to embed in the lap for consistent application.</p><p></p><p>I once tried Cerrosafe because it only took a hot water to melt it, but there was no shrinkage (Which is what it is supposed to do) And the lap could not be inserted with the compound on it because it was to tight.</p><p></p><p>Plumbers lead seems to be the best material to do an accurate cast with. Some times the cast doesn't turn out to good because the barrel cools it to quick. So use a heat gun or hair drier to warm the barrel for better results. I use old bore brushes and grind most of the brisle's off the brush and leave a few on the back of the brush to catch the lead and hold it firmly on the brush. it then attaches to the cleaning rod for use.</p><p></p><p>By the way, I still don't recommend this process for someone that has never done it but if you are dead set on doing it for the first time I would try it on an old take of barrel just to be safe.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1786922, member: 2736"] I would not recommend trying anything but lead because when lead cools It also shrinks enough to remove it You might end up with a permanent plug in the barrel. With lead, the small amount of shrinkage allows room for the abrasive and allows it to embed in the lap for consistent application. I once tried Cerrosafe because it only took a hot water to melt it, but there was no shrinkage (Which is what it is supposed to do) And the lap could not be inserted with the compound on it because it was to tight. Plumbers lead seems to be the best material to do an accurate cast with. Some times the cast doesn't turn out to good because the barrel cools it to quick. So use a heat gun or hair drier to warm the barrel for better results. I use old bore brushes and grind most of the brisle's off the brush and leave a few on the back of the brush to catch the lead and hold it firmly on the brush. it then attaches to the cleaning rod for use. By the way, I still don't recommend this process for someone that has never done it but if you are dead set on doing it for the first time I would try it on an old take of barrel just to be safe. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Lapping A Barrel
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