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                            Library & Multimedia
 The Science Behind Firearm and Tool Mark Examination
NCJ Number
              247879
Journal

*NIJ Journal* Issue: 274 Dated: 2014 Pages: 20-22
Author(s)
          Nancy  Ritter
Date Published

October 2014
Length
              3 pages
Publication Series
          NIJ Journal
Annotation
              This study of the ballistic examinations of bullets fired from Glock gun barrels determined whether trained firearm and tool mark examiners studying bullets fired through consecutively manufactured Glock firearm barrels correctly identified the gun that fired the bullet, as well as whether an examiner's level of experience was influential in the correct identification of the gun that fired an examined bullet.
Abstract
              The study found that the examiners correctly matched the spent bullet to the barrel that fired it 98.8 percent of the time.  The study also found that examiners with less than 10 years of experience did not reach different conclusions than examiners with more than 10 years of experience.  The study sent 150 test sets to 185 firearm and tool mark examiners in 41 States, the District of Columbia, and internationally.  This sample was the largest ever used for this type of experiment.  A member of the Department of Mathematics and Statistics at Florida International University analyzed the results.  The National Institute of Justice (NIJ), which funded this study, is also funding two ongoing studies that could provide information on the scientific foundation of firearm and tool mark examination as a forensic investigative tool.  These studies are briefly described.
      
  
          Additional Details
Grant Number(s)
        2010-DN-BX-K269


  
  
        
  Agencies
        NIJ


  
  
        
  Publication Type
        Report (Study/Research)


  
  
        
  Award
        Miami-Dade Repeatability and Uniqueness of Striations/Impressions in Bullets Fired in 10 Consecutively Manufactured Glock EBIS Barrels
    
  
  
Date Published: October 1, 2014
    
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