Frangible bullets will disintegrate upon contact with a surface harder than the bullet itself. Frangible bullets are often used by shooters engaging in close quarter combat training to avoid ricochets; targets are placed on steel backing plates that serve to completely fragment the bullet. Frangible bullets are typically made of non-toxic metals, and are frequently used on "green" ranges and outdoor ranges where lead abatement is a concern.
Wipo Publishes Patent of Raytheon, Alexandra L. Blake, W. Howard Poisl, Thomas E. Fetsko, Timothy B. Mellor for "Flight Vehicles Including Scribed Frangible Seals and Methods for the Manufacture Thereof" (American Inventors)
Dec 20, 2012; GENEVA, Dec. 20 -- Publication No. WO/2012/170659 was published on Dec. 13.Title of the invention: "FLIGHT VEHICLES INCLUDING...