Featured Research

from universities, journals, and other organizations

NIST 'Standard Bullet' Fights Gang Violence

Date:
January 22, 2007
Source:
National Institute of Standards and Technology
Summary:
Researchers at 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 optimize the settings of computerized optical imaging instruments used to match markings on fired bullets from a suspected weapon.

A NIST Standard Reference Material 2460 "standard bullet" mounted on a blue stub. Each one has six signature markings typically found in a fired bullet. SRM 2460 is intended primarily for use as a check for crime laboratories to help verify that the computerized optical equipment for bullet imaging and profiling is operating properly.
Credit: NIST

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 optimize the settings of computerized optical imaging instruments used to match markings on fired bullets from a suspected weapon.

Related Articles


Analyzing bullet markings in order to trace guns used in multiple crimes, such as gang activities, is possible because a gun's firing pin, rifling, breech face and ejection mechanism can impart unique markings, called "signatures" on fired bullets or ejected casings. Comparison (dual) optical microscopes allow forensic experts to compare signature features as small as a micrometer or one fortieth the width of a human hair. Digital imaging systems are used to gather and store bullet signatures in forensic databases, and it's important for these systems to record the best possible images. Crime labs can test the quality of their imaging systems by taking pictures of NIST's Standard Bullet and evaluating how well their system's analysis of the bullet's signature matches up with a certified signature provided by the Institute.

To make the Standard Bullet, NIST traced surface topography profiles on six master bullets fired by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and the Federal Bureau of Investigation (FBI). Researchers fed the data to a computer-controlled diamond turning machine to engrave six typical bullet signatures on the standard. After machining, a specially designed chemical etching process was used to roughen the surface of the bullet to make it appear like a real bullet when observed under an optical microscope.

Earlier efforts at standard bullets produced by real guns could show minute changes in signatures due to gun wear and environmental conditions. However, since the signatures and dimensions of the NIST Standard Bullet are recorded for manufacture, subsequent copies are essentially identical. The etched and corrosion-protected NIST Standard Bullet is certified for use until June 30, 2016. In 2007, NIST hopes to produce a complementary standard for ejected casings by a different fabrication procedure. The bullet and casing reference standards will support the National Integrated Ballistics Information Network (NIBIN) goal of establishing nationwide ballistics traceability, measurement unification and quality control. NIBIN is a joint project of the FBI and the ATF. Development of the NIST Standard Bullet was sponsored by the National Institute of Justice (NIJ) through the NIST Office of Law Enforcement Standards (OLES).

For more information on NIST Standard Reference Material 2460, "Standard Bullet," see https://srmors.nist.gov/view_detail.cfm?srm=2460.


Story Source:

The above story is based on materials provided by National Institute of Standards and Technology. Note: Materials may be edited for content and length.


Cite This Page:

National Institute of Standards and Technology. "NIST 'Standard Bullet' Fights Gang Violence." ScienceDaily. ScienceDaily, 22 January 2007. <www.sciencedaily.com/releases/2007/01/070119164400.htm>.
National Institute of Standards and Technology. (2007, January 22). NIST 'Standard Bullet' Fights Gang Violence. ScienceDaily. Retrieved April 22, 2015 from www.sciencedaily.com/releases/2007/01/070119164400.htm
National Institute of Standards and Technology. "NIST 'Standard Bullet' Fights Gang Violence." ScienceDaily. www.sciencedaily.com/releases/2007/01/070119164400.htm (accessed April 22, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, April 22, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Maine Storm Surge Sparks Power Explosions

Raw: Maine Storm Surge Sparks Power Explosions

AP (Apr. 21, 2015) Police dash cam video shows a series of explosions along the beach in Maine as heavy storm surge soaked electrical transformers. (April 21) Video provided by AP
Powered by NewsLook.com
Japan's Maglev Train Breaks New World Speed Record

Japan's Maglev Train Breaks New World Speed Record

AFP (Apr. 21, 2015) Japan&apos;s state-of-the-art maglev train clocks a new world speed record in a test run near Mount Fuji, smashing through the 600 kilometre (373 miles) per hour mark, as Tokyo races to sell the technology abroad. Video provided by AFP
Powered by NewsLook.com
Free Home Heating Offered by E-Radiators

Free Home Heating Offered by E-Radiators

Reuters - Innovations Video Online (Apr. 21, 2015) A revolutionary new radiator design offers Dutch home-owners the chance to get free heating. The e-Radiator is a computer server modified so that the heat it generates can warm a room inside a house. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

AFP (Apr. 21, 2015) Solar Impulse 2 lands in the Chinese city of Nanjing, finishing the sixth stage of its landmark 12-leg quest to circumnavigate the globe powered only by the sun. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins