The M576 contains twenty metal pellets with an overall weight of 24 grams.US Army Technical Manual TM 43-0001-28 Ammunition Data Sheets page 6-33 The XM576/XM576E1 was standardized to become the M576. Normal dispersion pattern of the M576 will put 13 of 20 pellets in a 1.5 meter circle at 40 meters. The remaining 7 pellets could land anywhere. Another test variant, the XM576E2, which had twenty seven metal pellets without a sabot within the shot cup, was deemed to spread too quickly for effective use. Both types had a muzzle velocity of roughly 880 ft/s (268 m/s).
