Analysis of information sources in references of the Wikipedia article "Sniper rifle" in English language version.
Some information publicly available from The Ultimate Sniper: an Advanced Training Manual for Military and Police Snipers, Major John Plaster, 1993.
The FBI, a national-level policing organization, has recently specified an accuracy level of 0.5 MOA for 5 shots at 100 yd for sniper rifles issued to their SWAT teams
Minimum documented range is 5 yards, maximum documented range is 187 yards: Police Sniper Utilization Survey, American Sniper Association, 2006, full report available to military and law enforcement agencies only.
The FBI, a national-level policing organization, has recently specified an accuracy level of 0.5 MOA for 5 shots at 100 yd for sniper rifles issued to their SWAT teams
Minimum documented range is 5 yards, maximum documented range is 187 yards: Police Sniper Utilization Survey, American Sniper Association, 2006, full report available to military and law enforcement agencies only.