Starline strives to hold the closest production tolerances possible on every caliber we produce to ensure the highest quality brass available. All brass is produced within SAAMI specifications and includes special heat treat processes and designs to enhance strength and longevity. Known for its accuracy, the .38 Special is one of the most popular handgun cartridges in the world. Can be fired in all revolvers chambered for the .357 Magnum.Specifications and Features: Caliber .38 Special Unprimed Brass Made in the U.S.A.