Brownells Hardball Bullet Casting Alloy. Ingots weight roughly 5 pounds. This alloy consists of 92% Lead, 2% Tin, and 6% Antimony. This is the modern version of the old Lyman #2 and is a great alloy for use in handgun bullets and many higher velocity rifle cartridges. Has a Brinell Harndess of about 16. Made form virgin metals, not from scrap, ensuring you are adding clean alloy. Sold by the ingot, weights are approximate.