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Related Experiment Videos

Bullet identification with radiography.

R P Bixler1, C R Ahrens, R P Rossi

  • 1Department of Radiology, School of Medicine, University of Colorado Health Sciences Center, Denver 80262.

Radiology
|February 1, 1991
PubMed
Summary
This summary is machine-generated.

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This study presents a simple radiographic technique to accurately estimate bullet weight and caliber, even for deformed projectiles. This method aids in forensic investigations by providing reliable ballistics data.

Area of Science:

  • Forensic Science
  • Radiology
  • Ballistics

Background:

  • Accurate determination of bullet weight and caliber is crucial in forensic ballistics.
  • Existing methods may struggle with deformed bullets, necessitating reliable alternatives.

Purpose of the Study:

  • To develop and validate a simple radiographic method for estimating bullet weight and caliber.
  • To provide a technique applicable to both deformed and undeformed bullets with known confidence levels.

Main Methods:

  • Utilized three orthogonal radiographs to derive bullet cross-sectional area.
  • Correlated cross-sectional area with bullet weight using a database of 48 human-recovered bullets.
  • Developed distinct equations for bullets weighing ≤5.8 g and >5.8 g.
  • Implemented a direct caliber calculation from bullet diameter for undeformed bullets.

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Main Results:

  • The radiographic method accurately predicted the weight and caliber of tested bullets.
  • The technique proved effective for a wide range of bullet shapes, including deformed ones.
  • When one method was not applicable, the alternative provided reliable results.

Conclusions:

  • The developed radiographic method offers a reliable tool for estimating bullet weight and caliber in forensic casework.
  • The findings support its potential use in legal testimony for gunshot investigations.