Paper

Performance Evaluation of a Registered Ballistic Database Using the Evofinder® System^†

Yuesong Li M.S.

School of Forensic Science, People's Public Security University of China, Beijing, 100038 China

Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083 China

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Sheng Lin M.S.,

Sheng Lin M.S.

School of Forensic Science, People's Public Security University of China, Beijing, 100038 China

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Yaping Luo Ph.D.,

Corresponding Author

Yaping Luo Ph.D.

[email protected]

Graduate School, People's Public Security University of China, Beijing, 100038 China

Corresponding author: Yaping Luo, Ph.D. E-mail: [email protected]Search for more papers by this author

Zhongliang Mi B.S.,

Zhongliang Mi B.S.

Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083 China

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Yuesong Li M.S.,

Yuesong Li M.S.

School of Forensic Science, People's Public Security University of China, Beijing, 100038 China

Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083 China

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Sheng Lin M.S.,

Sheng Lin M.S.

School of Forensic Science, People's Public Security University of China, Beijing, 100038 China

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Yaping Luo Ph.D.,

Corresponding Author

Yaping Luo Ph.D.

[email protected]

Graduate School, People's Public Security University of China, Beijing, 100038 China

Corresponding author: Yaping Luo, Ph.D. E-mail: [email protected]Search for more papers by this author

Zhongliang Mi B.S.,

Zhongliang Mi B.S.

Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083 China

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First published: 22 March 2019

https://doi.org/10.1111/1556-4029.14054

Citations: 5

^†

Funding provided by the Opening Project of Shanghai Key Laboratory of Crime Scene Evidence (Grant No. 2018XCWZK17).

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Abstract

Firearms for police in China are registered along with their fired bullets and cartridge cases. A Registered Ballistic Database (RBD) of 1000 Norinco QSZ-92 pistols with registered ammunition was established and was evaluated through the Evofinder® system. In this research, 1000 bullets and 1000 cartridge cases were randomly selected and correlated against an RBD of 2996 bullets and 2999 cartridge cases. Examiners found that successful identifications all ranked 1st, supported with land (100%), groove (97%) engraved areas, and primary marks (85.6%) for bullets, and firing pin impressions (99.8%), and breech face marks (99.9%) for cartridge cases. Two known matches (KM) for the same pistol rank in the top two (100%). The distribution of similarity scores varies from marks; however, the Evofinder® system could still effectively distinguish known matches from known nonmatches (KNM) for either bullets or cartridge cases. This study demonstrates the efficiency of the RBD.

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Volume64, Issue5

September 2019

Pages 1335-1344

Performance Evaluation of a Registered Ballistic Database Using the Evofinder® System^†

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Performance Evaluation of a Registered Ballistic Database Using the Evofinder® System†

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Performance Evaluation of a Registered Ballistic Database Using the Evofinder® System^†