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Bullet trajectory reconstruction - Methods, accuracy and precision.

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Estimating bullet trajectories for shooting reconstruction is crucial. The probing method generally offers the best accuracy and precision for bullet defect analysis, except at very low impact angles.

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Area of Science:

  • Forensic Science
  • Ballistics
  • Material Science

Background:

  • Bullet trajectory estimation aids shooting scene reconstruction.
  • Accuracy and precision depend on reconstruction methods, impact angles, target materials, and bullet properties.

Purpose of the Study:

  • To evaluate the accuracy and precision of different bullet trajectory reconstruction methods.
  • To compare the probing, ellipse, and lead-in methods on various materials and impact angles.

Main Methods:

  • Applied variants of the probing, ellipse, and lead-in methods to bullet defects.
  • Utilized drywall, MDF, and sheet metal as target materials.
  • Tested shots at various angles of incidence.

Main Results:

  • The probing method generally yielded the best accuracy and precision.
  • The ellipse or lead-in methods performed better only at the lowest angles of incidence.
  • Performance varied based on material properties and angle of incidence.

Conclusions:

  • The probing method is often the most effective for trajectory reconstruction.
  • Method selection should consider the angle of incidence for optimal results.
  • Data aids in method selection, error correction, and precision assessment.