Dating cartridge headstamps
The Browning M2 machine gun was the most widely used weapon on the American bomber and fighter planes of WWII.Due to the high demand of ammunition for this gun, many companies began producing the .50 caliber round to keep the supply available.
For special applications (such as blanks), Ballistite was retained.So, it is no wonder that a single-based nitrocellulose powder was soon invented, the all-Italian "Solenite".The cartridge was then called M91/95 and always retained this name.The round is most distinguishable by the belted casing.It was used for the British Boys Anti-Tank rifle, a fearsome bolt action rifle with a considerable recoil. 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.
in this page has been taken from the Carpetbagger Aviation Museum website, a direct link for which is provided at left. The headstamp code B denoting the manufacturer should not be confused with B as in BVIIZ which indicates incendiary Ammunition. BCMK7, CRGBHMK1Z, DUMK5, IBMK6Z, IBMK7Z, TRGMK2, TRGMK3, TRGMK4. In addition to the .303 cartridges manufactured for Egypt this company also manufactured nitro-cellulose loaded 7.7 x 56R cartridges, which are interchangeable with the .303 round and are known to have been made in... The bullet in the illustrated round was 180 gr, PSP type, Photo provided by Sylvain Benoit. NZ pattern), 215 gr RNSP, 180 gr PSP, 180 gr HP, 174 gr PSP, 150 gr PSP, 130 gr PSP and 150 gr HP Sporting Ammunition, Mks 4 and 5 (Big Game Exploder) Sporting Ammunition, H. This factory set up as part of the 1939-1945 war emergency expansion plan. Armour Piercing, Ball, Incendiary- [Phosphorus filling] & Tracer Fabrique National d'Armes de Guerre, Herstal, Belgium produced nitro-cellulose loaded .303 cartridges in...
It has been presented a little differently and incorporates additional information on .303 rounds that my company APEX Enterprises manufactured during the 1970s. Produced .303 cartridges during the period 1940 - 1944 in:- AP (W Mk 1), BCMK7. IP,and IP No 2 Mk 1 Dominion Arsenal, Quebec, Canada manufactured .303 cartridges in... Ball, FN 8/7 Blank Bulleted Blank Cartridge Rifle Grenade, H Mk 7Z, M11 and M12 Incendiary Tracer L83 Jacketed soft point sporting Ammunition Greenwood and Batley, Leeds, UK.
With lead balls diameter is the important thing, weight less so.
Minie ball came in use before US civil war and continued to be in use after US civil war. As with musket ball, it is impossible to give any definite year. Nice to have but full rounds tend to have a maximum length and depending of bullet or type or weapon the round was meant to the total length can be less.
Indian Government Ammunition Factory, Dum Dum, Calcutta, India. AP (W Mk 1), BCMK6, BCMK7, Ball, Match Ball, Nitro-cellulose Mk 7Z (Late Pattern) Blank, Cordite Mk 5 (Canadian Pattern) Blank, Nitro-cellulose L Mk 5Z (Canadian Pattern) Drill, D Mk 6 and D Mk 9 Drill D 1942 (Canadian Pattern) Incendiary, B Mk 7 Proof, Q Mk 4 Tracer G Mk 1 (Canadian Pattern) Tracer G Mk 1Z (Canadian Pattern) Dominion Cartridge Company, military production was a simple D with a C-broad arrow for the Brownsburg plant which later became the Dominion Ammunition Division of Canadian Industries Ltd. This company manufactured Ammunition from an early stage, finally ceasing production in the late 1950s.