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Which makes the bullet go out of the barrel of the gun

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Which makes the bullet go out of the barrel of the gun

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Overall button rifling is the most popular and best rifling. It is also the most mass produced.

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Overall button rifling is the most popular and best rifling. It is also the most mass produced.

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The cold hammer forging process pushes an oversized metal tube over a hardened mandrel, which has the negative of the grooves ground into the outside profile. With some modern mandrels, the chamber is also included. During the process, the tube is fed and forged in small sections, and results in a finished barrel blank that is formed not just to the desired twist and caliber, but also length and sometimes, outside contour.

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The broach rifling is a metal cutting process that uses a long tool with multiple teeth that take small amounts of material out of each groove. The broach is fed down the barrel with a rotation that matches the twist ground in the tool, with each progressive tooth increasing the depth of cut. This is a similar process to single point cut rifling, but only requires a single pass. It can be done on a similar machine to that of button rifling.

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This is a metal cutting process where a hook tool is used to cut a single groove in the barrel. The process takes several passes to complete the depth of it.

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Button rifling is a cold forming process that swages rifling in the barrel with a carbide tool that has grooves in a specific dimension and twist rate. Button rifling is a single pass operation, where the button is pushed or pulled at a controlled rate through the bore of a barrel blank, resulting in the desired lands and grooves.

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RIFLING-the arrangement of spiral grooves on the inside of a rifle barrel

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RIFLING-the arrangement of spiral grooves on the inside of a rifle barrel

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Caliber-the internal diameter or bore of a gun barrel

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Caliber-the internal diameter or bore of a gun barrel

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BALLISTICS-The science of projectiles and firearms.

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BALLISTICS-The science of projectiles and firearms.