40 S&W brass fully processed and ready to load. All Buffalo Cartridge processed brass casings are corn cob tumbled before they go through Camdex commercial case processing machines. These machines deprime, swage the primer pocket, resize (including base sizing), check for split case (it will eject any split casings once detected), check for berdan primers (it will eject any berdan primers) and it will also check the length of the casings to ensure that you dont get any unwanted trimed down casings. After the brass makes its way through the Camdex processor it is tumbled a final time to ensure a high polish finish! Once the brass makes its way through this process it is returned back to factory specifications and is smooth as butter to load!