lead snowstorm
n.— «The head x-ray showed what appeared to be a lot of small metallic fragments inside the skull. It looked like what is called a “lead snowstorm,” small fragments of a bullet that has disintegrated when fired into the head.» —“Media Monitor: Destruction of X-rays” by Reed Irvine, Cliff Kincaid Accuracy in Media Aug. 31, 2001. (source: Double-Tongued Dictionary)