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Rifles, Reloading, Optics, Equipment
Gunsmithing
Lapping A Barrel
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<blockquote data-quote="shortgrass" data-source="post: 1790437" data-attributes="member: 24284"><p>The custom barrel makers a have a "lapping table" set up. A heavy , steel legged bench that's lagged to the floor, a station to melt the lead (with positive flow-thru ventilation), a station to poor the lap, and a station to hold the barrel securely during the lapping (like a quick release barrel vise). The 1"- 3/4" that needs cut-off is where the direction of the lap was reversed. There is certainly and "art" to successful lapping of a barrel. It is the last operation (besides inspection) in the barrel making process. Think, cost of steel, cost of cutting the steel to the desired length, deep hole drilling, reaming, some lap then, rifling, profiling. The costs accumulate. If the lapping is messed-up, all that can be done is to re-drill to a bigger "hole" and start again. The costs of the initial drilling, reamer, rifling are all 'out the window'. Not a good way to operate a profitable business. I see 'hands-on' instruction as the preferred method of 'learning how'. Any are free to experiment to their hearts' content.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1790437, member: 24284"] The custom barrel makers a have a "lapping table" set up. A heavy , steel legged bench that's lagged to the floor, a station to melt the lead (with positive flow-thru ventilation), a station to poor the lap, and a station to hold the barrel securely during the lapping (like a quick release barrel vise). The 1"- 3/4" that needs cut-off is where the direction of the lap was reversed. There is certainly and "art" to successful lapping of a barrel. It is the last operation (besides inspection) in the barrel making process. Think, cost of steel, cost of cutting the steel to the desired length, deep hole drilling, reaming, some lap then, rifling, profiling. The costs accumulate. If the lapping is messed-up, all that can be done is to re-drill to a bigger "hole" and start again. The costs of the initial drilling, reamer, rifling are all 'out the window'. Not a good way to operate a profitable business. I see 'hands-on' instruction as the preferred method of 'learning how'. Any are free to experiment to their hearts' content. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Lapping A Barrel
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