Temperature was approx. 79 degrees F. Elevation was approx. 750 feet above sea level. Test rifles were a Bushmaster 20” chrome lined HBAR and a Colt 16” chrome lined HBAR. Readings were taken at 15 feet from the muzzle.
Winchester Q3131A, 1999 – 3186 fps / 3062 fps
Federal Xm193, Lot 1 – 3299 fps / 3121 fps
South Africa surplus, M1A3, 1986 – 3235 fps / 3106 fps
IMI M193, 1999 – 3203 fps / 3060 fps