Process for heat treating bullets comprising two or more metals or alloys
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United States of America Patent
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Sep 2, 2003
Grant Date -
N/A
app pub date -
Mar 5, 2002
filing date -
Feb 2, 1999
priority date (Note) -
Expired
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Abstract
Embodiments of the described method include (a) forming a core comprising a lead alloy, (b) applying copper or a copper alloy to at least a portion of an exterior surface of the core to form a jacketed bullet, (c) heating the jacketed bullet at a pre-selected temperature for a period of time sufficient to simultaneously harden the core and stress-relieve the copper jacket, and, optionally, (d) reworking a selected portion of the heat-treated bullet by mechanical reforming or annealing to lower the hardness of the reworked portion.
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