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List of military headstamps : ウィキペディア英語版 | List of military headstamps
A headstamp is the markings on the bottom of a cartridge case designed for a firearm. It usually tells who manufactured the case. Military headstamps usually have only the year of manufacture . The headstamp is punched into the base of the cartridge during manufacture. A resource for identifying where the ammunition originated can be found at (Cartridge Collectors ). == Military Headstamps == Two digits are the last two digits of the year of manufacture. Early 20th century cartridges may have additional digits or a letter indicating the month of manufacture. The letter code indicates the place of manufacture:〔Sharpe, Philip B. ''Complete Guide to Handloading'' (1953) Funk & Wagnalls p.75〕
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