The full metal jacket bullet is a bullet in which the jacket is closed at the front towards the tip. The jacket, made of copper, tombac or iron, surrounds a hard lead core. Full metal jacket bullets are stable in mass and shape, which means they do not deform in the target, nor do they fragment. They either penetrate the target or remain lodged in it - without changing shape or fragmenting. They are usually used for military purposes, sport shooting or hunting of predatory game.
In hunting use, the advantage of a full metal jacket bullet, as opposed to a partial fragmentation or deformation bullet, is that the rejection is at most insignificantly greater than the impact. The bellows of a piece of predatory game are thus weighed down less than if the labbing of the bullet would provide for a larger reject. The disadvantage of a full metal jacket bullet is that only a small destructive effect would be developed in the game body. If one were to shoot at cloven-hoofed game with full metal jacket bullets, one would have to reckon with large escape distances.
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