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Rare, British .280/30 EXPERIMENTAL Ball Rounds for the British EM2 Experimental Rifle. Sn - 22787:8 The .280 British round was an experimental rimless bottlenecked intermediate rifle cartridge. The cartridge was later designated 7 mm MK1Z, and has also been known as .280/30, .280 Enfield, 7 mm FN Short and 7×43mm. Like most armed forces in the immediate post-World War II era, the British Army began experimenting with lighter rounds after meeting the German StG 44 with the 7.92 Kurz round in combat. The Army began development in the late 1940s with the .280 and it was approved for testing in 1947. In 1949 the rim diameter was increased to .473 inch (12 mm), the same as the United States' standard Caliber .30 ammunition, and redesignated .280/30, the bullet was changed to a heavier 139 gr (9.0 g), with a mild steel core still at 2270 fps. These are original .280/30 British experimental rounds for EM1 trials rifle made by Raday Green. The rounds have brass cartridge cases with a brass percussion primer fixed with a ring crimp. The primer anulus is purple designating a ball round and are headstamped RG (Radway Green) 49 (1949 dated) 280/30 (the cartridge designation). The copper full metal jacketed bullet is crimped into the cartridge case with a single ring crimp. The price for these rare experimental rounds includes UK delivery and no licence is required to possess these inert rounds in the UK if retained as part of a collection or display. The price is per round and the minimum order is 2 rounds, Sn 22787:8 £35.00
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