[USA] NIST 'Standard Bullet' fights gang violence / EurekAlert!, 19 January 2007
http://www.eurekalert.org/pub_releases/2007-01/nios-nb011907.php
"Researchers at the National Institute of Standards and Technology (NIST) have developed a copper bullet designed to help end criminal sprees without once being fired. Crime laboratories can use NIST's "Standard Bullet" to optimise the settings of computerised optical imaging instruments used to match markings on fired bullets from a suspected weapon.
For more information on NIST Standard Reference Material 2460, "Standard Bullet," see https://srmors.nist.gov/view_detail.cfm?srm=2460"