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Many metals and alloys are used to manufacture bullets. The chief considerations are preservation of gun barrels, kinetic energy transfer (stopping power), penetration (a combination of hardness and weight) Some bullets are designed to penetrate others to shatter into flechettes. The steel or copper cladding is essential for this action. Common bullet metals are:

* Copper casings with lead in the bullet itself * Various lead alloys without casings to improve ease of casting

* Tungsten fo hardness and ecological sensitivity in military rounds * Bismuth for eco-sensitivity

* Depleted Uranium for kinetic energy transfer * Iron or steel shot for shotgun pellets for eco-sensitivity

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16y ago

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