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Title: Initial Measurement Results For 40 NIST Rm 8240 Standard Bullets
Author: J. Song, E. Whitenton, L. Ma, T. Vorburger, A. Zheng
Source: 2004 Measurement Science Conference
Year Published: 2004
Abstract: The RM (Reference Material) 8240 standard bullets are developed at the National Institute of Standards and Technology (NIST) to support the National Integrated Ballistics Information Network (NIBIN), recently established by the Bureau of Alcohol, Tobacco and Firearms (ATF) and the Federal Bureau of Investigation (FBI). The RM bullets are designed as both a virtual and a physical bullet signature standard. The virtual standard is a set of six digitized bullet signatures originally profiled from six master bullets fired at ATF and FBI using six different guns. By using the virtual signature standard to control the tool path on a numerically controlled diamond turning machine at NIST, 40 RM bullets were produced. A bullet signature measurement system based on a stylus instrument was developed at NIST. A comparison parameter and an algorithm using auto- and cross-correlation functions were proposed for qualifying the bullet signature differences between the RM bullets and the virtual bullet signature standard.

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