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Old April 3, 2005, 12:51 PM   #2
BillCA
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Join Date: November 28, 2004
Location: Silicon Valley, Ca
Posts: 7,117
I'd be careful using today's wheel weights.

Due to environmental concerns some of the weights I've seen lately are not made out of lead -- or at least the soft lead of years gone by. They seem to be some kind of alloy. Someone else might be able to provide more info.

Antimony (an-tim'-onee) is what has been typically used to harden soft lead bullets. Any of the guides for casting bullets should be able to give you the proper ratios for a desired hardness.
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