lead snowstorm
n.— «While conducting the internal autopsy, Comfort testified she found fragments of the rifle bullet throughout the body, which forensic pathologists commonly refer to as a “lead snowstorm.”» —“Forensic pathologist and Nolan Graham’s wife testify in murder trial” by Kara D. Machado Eureka Reporter (California) Sept. 15, 2006. (source: Double-Tongued Dictionary)