Recently developed frangible ammunition of copper particulate construction in .38 Special, 9 mm, and .223 calibers was evaluated for wounding performance by firing into pigs' heads. The ability to match fired bullets with the corresponding gun was also examined. Results showed that wounds caused by 9-mm and .38 Special frangible bullets were comparable in severity to those caused by regular service ammunition of the same caliber. The recovered 9-mm and .38 Special bullets demonstrated class characteristics but not the individual rifling marks necessary for bullet-to-gun matching. High-velocity .223-caliber rifle bullets fragmented extensively within target tissues, causing severe wounding. Radiologic examination of resulting wounds showed images strikingly similar to the lead "snowstorm" picture caused by high-velocity hunting ammunition.