Peer Review

[friendly_iconoclast]

27. Unfortunately for you, that source directly contradicts your claims.

Didn't read it, did you?:

(Note: emphasis added)

http://en.wikipedia.org/wiki/Teflon-coated_bullet

Teflon-coated bullets, sometimes erroneously referred to as "cop killer bullets", are bullets that have been covered with a coating of polytetrafluoroethylene....

...In the 1960s, Paul Kopsch (an Ohio coroner), Daniel Turcos (a police sergeant), and Donald Ward (Kopsch's special investigator), began experimenting with special purpose handgun ammunition. Their objective was to develop a law enforcement round capable of improved penetration against hard targets, such as windshield glass and automobile doors. Conventional bullets, made primarily from lead, often become deformed and less effective after striking hard targets, especially when fired at handgun velocities. The inventors named their company "KTW," after their initials.

After some experimentation with sintered tungsten-alloy rounds, which were eventually abandoned due to supply and cost concerns, the inventors settled on a bullet consisting mostly of hardened brass with a steel core. In testing, the bullets wore out barrels far more quickly than normal copper-jacketed lead rounds, since they did not deform to fit the rifling.[1] In an effort to reduce barrel wear, the bullets were then coated with a layer of Teflon. The inventors had also noted that the tips of canes were frequently covered with the relatively soft Teflon to help them grip surfaces. KTW stated that the addition of Teflon helped to prevent bullet deflection off of doors and windshields, reducing the risk of dangerous ricochets and improving penetration against these surfaces.[2][3]

The production of KTW-brand ammunition ceased in the 1990s. However, some manufacturers continue to coat their bullets with various compounds, notably molybdenum disulfide, as a protective layer against barrel wear, and to reduce the amount of lead given off as dust when shooting in indoor ranges....

http://www.guncite.com/ktwint.html

...We decided to go to the source, to track down the inventor of the original "cop-killer" bullet, originally marketed as the "KTW" bullet. We found the "K" of "KTW," Dr. Paul Kopsch told us that the bullet was made exclusively for police and military use. And had nothing to do with protective vests.

Kopsch: "There were a couple gunfights, police versus criminal, here in Lorraine County, [Ohio]. The ordinary .38 Special service bullet would not get through the car door. And with any degree of obliquity, it bounced off the windshield. [Police] Lieutenant Turcus, Don Ward and I thought maybe we could design a bullet which would get through the car door, and get through the windshield and get the crook out of the car ...

Kopsch explained that the teflon coating, which a host of media and lawmakers alleged was the key to penetrating body armor, served one purpose. It helped bullets go through smooth surfaces, like windshields and car doors, especially at oblique angles. The former Army medical officer likened it to the teflon tip of a walking stick. It simply grabs better.

Kopsch: "Adding a teflon coating to the round added 20% penetration power on metal and glass. Critics kept complaining about teflon's ability to penetrate body armor. That was nonsense typical of do-gooders. In fact, teflon cut down on the round's ability to cut through the nylon or kevlar of body armor."...

So long, and thanks for playing...