I plucked these off some 9mm rounds I got in California many years ago. But you can pretend they were used in a bank robbery or something, it that makes them seem more interesting. The copper color comes from a thin plating of copper, but inside it's all hot lead.
The sound for this sample is a nice shot borrowed from da-admiral.com.
Source: Gun Shop in California
Contributor: Theodore Gray
Acquired: 15 April, 2002
Text Updated: 11 August, 2007