Bullet Casting

Shows the automated bullet casting process. In this particular example a 200 grain round nose 45ACP bullet is being cast. This is most commonly a handgun use bullet. The lead alloy used in this process is a fully alloyed mixture of 92% lead, 6% Antimony and 2% tin and will produce bullets of between 15-18 Brinell in hardness. The process involves the heating of the lead alloy in the top mounted pots and then rotation of the mould wheel which in this example contains 8 identical moulds. This process begins with the lead streams being dropped into each mould pair till the cast iron moulds themselves reach an optimum temperature.. From that point on the process continues and good quality bullets are dropping from the moulds as they rotate past the sprew cutter and are pneumatically vibrated to dislodge the new bullets which drop into a collection tray at the base of the machine. The quality of the end product bullets is dependant on the quality of the lead alloy, the accuracy of machining of the bullet moulds and a good control of alloy temperatures, speed of rotation, adjustment of lead drop streams and more.
The final accuracy of such bullets will be determined by the above factors along with proper Hi Tek Coating and final sizing of bullets to an optimum diameter to suit the gun barrels being used.