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Related Experiment Videos

Identification of tandem bullets.

J K Sinha, C N Bhattacharyya

    Medicine, Science, and the Law
    |July 1, 1989
    PubMed
    Summary

    This study investigates identifying tandem bullets, which are two bullets fired sequentially. Physical evidence like propellant indentations and striations on the bullet base can confirm tandem bullet events.

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    Area of Science:

    • Forensic Science
    • Ballistics
    • Material Analysis

    Background:

    • Tandem bullets, fired in succession, present unique identification challenges in forensic investigations.
    • Distinguishing between the striking and lodged bullet in a tandem event is crucial for crime scene reconstruction.

    Purpose of the Study:

    • To investigate methods for identifying tandem bullets based on physical evidence.
    • To evaluate the reliability of specific bullet characteristics in determining tandem bullet events.

    Main Methods:

    • Microscopic examination of bullet bases for propellant particle indentations.
    • Analysis of striations on the inner periphery of the bullet base cavity.
    • Assessment of base protrusion as an indicator of the striking bullet.

    Main Results:

    • Deep indentations of propellant particles on the lead base cavity indicate tandem bullet movement.
    • Striations on the inner cavity periphery are useful physical evidence for lodged bullets.
    • An outward base protrusion serves as corroborative evidence for the striking bullet.

    Conclusions:

    • Specific physical evidence on bullet bases can reliably identify tandem bullet events.
    • Propellant indentations and striations are key indicators for lodged tandem bullets.
    • Base protrusion is a valuable corroborating factor for identifying the striking bullet.

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