Lee Improved Minie Bullet Mold .50 Caliber. The aluminum material provides rust resistance and the moulds are capable of heating up and cooling down more quickly than moulds made from steel or iron. This mould is also much lighter weighing roughly 33 percent less than steel and iron moulds.Another benefit is less fatigue during reloading sessions. This mould is CNC machined for perfect roundness and control of size. Keep in mind that while the mould is sold according to weight for suggested alloy there could be slight variances. Specifications for Lee Improved Minie Bullet Mold .50 Caliber 90472: Manufacturer: Lee Caliber: .500 Nitro Express Fabric/Material: Aluminum Bullet Weight: 360 grain Bullet Type: Black Powder Package Contents: Lee Improved Minie Bullet Mold .50 Caliber 90472 The Lee Improved Minie Bullet Mold .50 Caliber 90472 is a quality addition to the Lee Precision lineup. For more great deals on Bullet Molds by Lee Precision please browse our Lee Precision Gunsmith and Reloading Tools page. Lee Improved Minie Bullet Mold .50 Caliber