Quenching Cast Bullets with Chilled Antifreeze and Brine

A two-minute video experimenting with antifreeze and brine chilled to -25C/-13F as a potential cast bullet quenching fluid.

Test employed 1/2L each of automotive antifreeze and 8:1 Water/NaCl (Table Salt) at -25C/-13F. All bullets used in this test were cast from the same wheel weight alloy using the same equipment and on the same day. Hardness testing was performed using a Lee Precision Lead Hardness Test Kit.