The proper annealing of cartridge case necks — never the body or head — extends case life and increases accuracy. Here are some good ways to do it.
The Art and Science of Annealing within
How Induction Annealing Works, Under The Microscope
Annealing Case Necks
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Cartridge Case Annealing - MassReloading
Annealing Case Necks
How Induction Annealing Works, Under The Microscope
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Annealing Case Necks
Processes, Free Full-Text