NIJ Standard 0108.01: 

National Institute of Justice
Velocity: 411 - 441 m/s
Caliber: Magnum 44 SWC - GC
Weight: 240 Granos

The National Institute of Justice (NIJ) is the research, development and evaluation agency of the United States Department of Justice. NIJ, along with the Bureau of Justice Statistics(BJS), Bureau of Justice Assistance (BJA), Office of Juvenile Justice and Delinquency Prevention (OJJDP), Office for Victims of Crime (OVC), and other program offices, comprise the Office of Justice Programs (OJP) branch of the Department of Justice.

Required for levels II, III-A and III an array of impacts as shown in figure, 4 of them in the corners of a square of side 200mm fifth most impact on the center of the square.