Kopel on “Cop Killer” Ammo:

The debate over gun control is, it seems, invariably haunted by labels, epithets, slogans and misinformation designed solely to generate sympathetic political reactions to proposed restrictions on gun rights, despite the facts. This is one reason why it is so hard to debate so-called “reasonable regulations”–a type of law that would in principle be consistent with the Second Amendment. So few proposed regulations are even arguably “reasonable” that engaging in such a debate makes one appear to have adopted the stance that the right to keep and bear arms is more absolute than the right of freedom of speech. The object of these legislative initiatives is not the public safety benefits of the proposed regulation but to raise the cost of manufacturing, distributing, possessing, or using firearms–what in the abortion context is called an “undue burden”–so as to accomplish indirectly a prohibition that cannot be achieved legislatively, or simply to maintain legislative momentum towards eventual prohibition. In this field, an ounce of technical knowledge is often worth a pound of constitutional theory.

In The Return of a Legislative Legend, David Kopel takes on another such regulation–the so-called “cop-killer” bullet–which he contends is a deliberately manufactured myth. But you judge for yourself. Here’s a taste:

“Cop-killer” bullets are sometimes called “Teflon bullets,” but this name reflects a serious misunderstanding. For example, in the movie Lethal Weapon 3, a so-called “Teflon bullet” from a medium-power handgun was supposedly able to penetrate several inches of hardened steel on a bulldozer blade. In the real world, however, no bullet could possibly perform such a stunt.

Actually, a Teflon coating is applied to the outside of a wide variety of ordinary ammunition. Teflon reduces the lead abrasion caused by the bullet’s movement down the barrel of the gun. Thus, the barrel is kept cleaner, and is protected from excessive wear. Also, reduced abrasion means that fewer tiny lead air particles are produced, so the air is cleaner — an especially important consideration at indoor shooting ranges.

In addition, a Teflon coating on a bullet also makes the bullet safer to use in a self-defense context. The Teflon helps the bullet “grab” a hard surface such as glass or metal, and thus significantly reduces the risk of a dangerous ricochet. Similarly, canes or walking sticks are often coated with Teflon, so that they will not slip on hard, smooth surfaces.

So in order to reduce ricochets, KTW bullets as well as many ordinary types of defensive ammunition use Teflon or similar substances.

Read it all, especially his discussion of proposals to restrict ammunition that can penetrate body armor.

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