Dating cartridge headstamps
A cartridge headstamp is a mark, or series of marks impressed, or sometimes embossed, on the head of the cartridge case during its manufacture.
Company formed in 1897, a wholly owned subsidiary of Nobels explosive company who also owned a further Ammunition plant, fully acquired in 1907, at Waltham Abbey, Essex. The company was taken over in 1918 by Explosives Trades Ltd which became Nobel Industries, which was in turn was to become part of the new giant Imperial Chemical Industries Ltd when it was formed in 1926. cartridges produced with the BE cases from 1941 to 1945 were... Manufacture thought to have been by Fabrique Nationale (National Weapons Factory) at Herstal in Belgium. BCMK2, BCMK4, BCMK6, BCMK7, B (Mk 6 Match), BNCMK7Z, CRGBHMK1Z, BLK (Mk 6 and 6 converted), BLK (Mks 3, 5, 5z), BLK (Commercial), D (D Mk 9), Dummy (Mks 3, 4), Dummy (Non Regulation), Practice (Gaudet), Practice (short range... Crompton Parkinson Ltd, Guiseley, Yorkshire, UK, although filling took place at Doncaster (see below). Fabricated nitro-cellulose loaded Imperial Japanese Navy Year Type 92 Machine Gun Ammunition, which is interchangeable with the .303 cartridge in...
This factory made and marked cases but filling was carried out at the Royal Ordnance Factory Swynnerton, Staffs.
The headstamp is the stamped markings on the head of the cartridge.
Information that can be obtained from the headstamp is extremely varied and depends on the intended purpose or use of the cartridge and who manufactured it.
Thousands of Real photo's and B&W drawings of actual headstamps, with descriptions of their manufacturers, country of origin and dates of manufacture when known etc.