Previously fired mixed headstamp .40 S&W. The brass has been machine separated and culled for steel, aluminum and grossly deformed cases. Some cases may have minor damage that will be fixed once they have been resized. Since our process relies on the human eye to cull the bad cases, inevitably some make it through. Shells are packaged by weight and we always make sure to throw in some extras to make up for any off spec or damaged cases.THIS IS NOT LOADED AMMUNITION.