Over the last two-plus decades, the scientific validity of the principles that underpin identifying a firearm from recovered fired ammunition has been a core issue for the admissibility of expert evidence in criminal trials in United States. The issues that dominated the determinative points, as they related to the scientific and technological analysis, centered around the following: the validity of uniqueness of firearms, subjective methodology, the potential rate of error, unknown statistical certainty, and unsatisfactory proficiency tests. These issues have essentially become the legal requirement for admissibility of experts- opinion on the linkage of firearms with fired ammunition, an important forensic opinion that connects the crime with the perpetrator through the weapon of offence.
In Forensic Firearm in Criminal Trials: Legal, Investigative, and Scientific Evidence, internationally renowned forensic firearm expert, Dr. J. K. Sinha provides demonstrative expl
