belted magnum
any cartridge, but generally a rifle cartridge, with a shell casing that has a pronounced "belt" around its base that continues 2–4 mm past the extractor groove
en-US/ˈbɛltəd ˈmæɡnəm/
en-GB/ˈbɛltɪd ˈmæɡnəm/
any cartridge, but generally a rifle cartridge, with a shell casing that has a pronounced "belt" around its base that continues 2–4 mm past the extractor groove