The year of 2018 marks the 55th anniversary of the assassination of the 35th United States President, John F. Assassination Firearms Examination Rifling Rifling Angle Lands and Grooves Bullet-Weapon Correlation Rifling Twist Rifling Pitch Quantitative Forensics. The testing results indicate that the rifling angle comparison may suggest a new examination direction to determine if the CE 399 was actually fired by the CE 139. This device provides unique examination features: real-time image, digital measurement, and in situ measuring position, thus non-destructive, non-contact, and quantifiable. Via a quasi-experimental test, this study introduces a new hand-held device that can measure and compare the rifling angles inside a gun barrel and on the surface of a bullet.

Although the bullet was the only useable physical evidence found on Governor Connally's stretcher, the bullet and the rifle have not been used in any forensic examinations, mainly because these two pieces of evidence are the protected items under the National Archives. However, none of the studies has focused on the rifling angle comparison between the alleged murder weapon (CE 139) and the nearly intact bullet (CE 399). Several scientific studies have also been conducted to find the truth about the murder. Two official investigations were conducted by the Warren Commission's Report in 1964 and the House Select Committee on Assassinations' Report in 1979. Kennedy, one of the most traumatic murders in U.S.

November 22, 2018, marks the 55th anniversary of the assassination of President John F. Real Time and In-Situ Measurement of Rifling Angles with a Hand-Held Digital Device: A Technical Implication to the J.F.K. Received Date: Accepted Date: Published Date: 1 Ĭitation: Wang JZ. Real Time and In Situ Measurement of Rifling Angles with a Hand-Held Digital Device: A Technical Implication to the JFK Assassination Caseįorensic Studies Program, School of Criminology, Criminal Justice, and Emergency Management, California State UniversityLong BeachĬorresponding Author: John Zheng Wang, Forensic Studies Program, School of Criminology, Criminal Justice, and Emergency Management, California State University-Long Beach, Tel: 56 E-Mail:

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