An annular groove cut in rimless, semi-rimmed cartridge or belted cases, forward of the head, for the purpose of providing a surface that the gun extractor may grip to remove the case from the chamber.
CASE EXTRACTOR GROOVE
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An annular groove cut in rimless, semi-rimmed cartridge or belted cases, forward of the head, for the purpose of providing a surface that the gun extractor may grip to remove the case from the chamber.