The full metal jacket is a type of bullet where the jacket is closed at the front towards the tip. The jacket made of copper, tombak, or iron surrounds a hard lead core. Full metal jacket bullets are mass- and shape-stable, meaning they do not deform either in the target or split apart. They either penetrate the target or remain lodged in it—without changing shape or fragmenting. They are typically used in military applications, in sport shooting, or in hunting game animals.
In hunting applications, the advantage of a full metal jacket bullet, as opposed to a soft point or expanding bullet, is that the exit wound is at most only slightly larger than the entry wound. This means that the hide of a game animal is less damaged than if the bullet were designed to create a larger exit wound. The disadvantage of a full metal jacket bullet is that it would cause only minimal destruction within the animal's body. If one were to shoot game animals with full metal jacket bullets, one would have to expect long escape distances.
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