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Starting point for discussion: We will start by using Wheel Weights to increase hardness. Many of us use them as a source of Antimony and they are either free or cheaper than pure lead. lets say we are molding 3/4 oz gigs and larger. What % of WW's do you recommend adding and why? What are Pros and Cons associated with increasing the hardness of lead. Fluxing Mold fill Prone to sticking in mold Mold flash Temperature of lead mixture Harder end product Powder coating Melt Temp Lead = 621 F Antimony = 1,167 F TIn = 449 F