Independent Blind Testing by Southwest Research Institute (SwRI)

Southwest Research Institute is a nonprofit organization with a staff of more than 2,600 people specializing in engineering and the physical sciences. Founded in 1947, SwRI provides  contract research, testing, and development services to industrial and government clients in the United States and abroad. Clients include DARPA (the Defense Advanced Research Projects Agency) as well as every branch of the US Department of Defense.


In 2017, Ranger contracted with SwRI to  conduct blind testing of one caliber of Ranger's Harmonically Tuned Ammunition against a wide variety of other brands including "Match Grade" varieties. The test platform was a generic off-the-shelf AR-15 type rifle. All testing was conducted at SwRI's remote test facility located near Hondo, TX, on 16 October 2017.


Their conclusion was that Ranger's accuracy exceeded all other ammunition by an overwhelming margin.  


Overall, Ranger ammunition had a mean group size of 0.145" with a mean MOA of just 0.138".


Maximum Group Spread Comparison by Brand  


  1. Ranger Scientific 75gr FMJ: 0.37"
  2. Federal Premium Gold Match 77gr SMK: 0.69"
  3. Fiocchi Exacta 77gr SMK: 0.72"
  4. PMC X-Tac Match 77gr OTM (SMK): 1.01"
  5. Norma TAC 55gr FMJ: 1.17"
  6. Hornady Black 75gr BTHP: 1.19"
  7. Winchester White Box 55gr FMJ: 1.49"
  8. Remington UMC Green Box 55gr FMJ: 2.02"
  9. IMI Systems 55gr FMJ: 3.21"

5 shots, 1 hole - 100+ yards, MOA of 0.138".
Click photo for information on SwRI Ballistics.

5 shots, 1 hole - 100+ yards, MOA of 0.138". Click photo for information on SwRI Ballistics.