The term fire forming in firearms refers to the process of thermomechanically reshaping a metallic cartridge case to optimally fit a new chamber by firing it within that chamber. This might expand a cartridge to a new size, such as a wildcat cartridge, or just to the chamber of a specific gun.
The term fire forming in firearms refers to the process of thermomechanically reshaping a metallic cartridge case to optimally fit a new chamber by firing it within that chamber. This might expand a cartridge to a new size, such as a wildcat cartridge, or just to the chamber of a specific gun.
Source: Wikipedia "Fire forming" · CC BY-SA 4.0
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