Steel jacket penetration
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30 Nov The bullet penetrating steel plate most readily was the M bullet which armor penetration, brass, copper, full metal jacket, steel penetrator.
Description:This first part is all about the different types of projectiles, and there are quite a few. But first, in order to explain the different designations, a little about how bullets are made. Copper is used because it is strong enough to keep the softer lead in shape, but is soft enough to allow the rifling to grip the bullet. The copper jacket starts out as a cup, having been cut from a long sheet. These cups will eventually end up as jackets for 5.