Lee Loader is a complete reloading system, kit includes everything needed to reload 38 Special, except wood or plastic mallet. The mallet may be obtained from your local hardware store. The 357 Mag can be reloaded with this kit with the purchase of load data and dipper. The kit will crimp both the 38 Special and 357 Magnum cases. Please note: The Classic Lee Loader neck sizes only. This is not recommended for semi-auto, pump and lever action guns.