For what it is worth, I use straight wheelweights for all my bullets (45acp/lc, 357, 9mm and 45-70).Since there is no "standard" mix formula for wheelweights, if the molds don't fill well, I sometimes add a little "leadless solder" as it is almost pure tin. I drop my bullets into ice water, not just cold water. In the winter I scoop up a bucket full of clean snow and add a little cold water. Be very careful not to get any Zinc in your mix as you will never get good bulets with even a little zinc in the mix.
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