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I bet they are. DU is used for its armour-penetrating characteristics including in rifles, where uranium (or tungsten) covered rounds are used to penetrate body armour. It would be insane to waste the armour penetration by using an expanding bullet. The heavier and more energetic the bullet, the easier it will penetrate the armour, but the easier it will also penetrate the body, which means less energy is deposited inside it and less damage is caused. When using full metal jacket the exit hole is often almost as small as the entry hole. An expanding bullet (soft-point and to an even greater degree hollow-point) will splash and flatten out against body armour, often not penetrating and not doing any more damage than a massive bruise, like if you were hit by a sledge hammer. However, if you are not wearing armour the exit hole, if there even is one, might be the size of a balled fist.

This is why you must use full metal jacket in war but must use expanding ammunition while hunting: hunting is about killing as efficiently and quickly as possible, while in war you wan't to avoid killing the enemy if possible, the goal is just taking him out of action. Not only does that mean that you'll be better of if hit yourself, but a wounded enemy soldier is a bigger drag on the enemy resources than a dead one is.

Furthermore, when we're talking about autocannon or tank shells, it would be completely useless to use anything but full metal jacket. Anyone hit by one of those is torn to pieces due to the heavy caliber and massive kinetic energy, no matter the design of the tip of the shell, not to mention that autocannon shells are often explosive. APFSDS are not, but due to the massive kinetic energy they'll turn your body into a fine red mist if you're hit.

Peak oil is not an energy crisis. It is a liquid fuel crisis.

by Starvid on Fri Apr 1st, 2011 at 08:53:20 AM EST
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