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Time Left 15 min rule
2d 20h +
9/22/2017 9:25 PM
Item 698425772
Location Silver Spring, MD 20914
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I STILL AM NOT SURE WHAT "RAP" MEANS HERE BUT FOLLOWING IS PLENTY OF INFORMATION FROM VARIOUS SOURCES TO CONSIDER. The current SNIPER record holder: Corporal of Horse (equal to an E-5 in the US Army) Craig Harrison of the British Army's Household Cavalry is the deadliest sniper on the planet. He has two confirmed kills of a pair of Taliban machine gunners from a November 2009 engagement south of Musa Qala, Helmand Province, Afghanistan. The shots were GPS confirmed at a range of 2,475 m (2,707 yd), and made with a L115A3 Long Range Rifle chambered for the .338 cal. Lapua Magnum. LAST ONE! SOME YEAR AGO THERE WAS A BIG PUSH ON TO DEVELOPE A LONG RANGE SNIPER RIFLE WHICH COULD BE USED AT .50 RANGES BUT WITH MUCH LESS WEIGHT. THIS .416 NECKED DOWN TO .338 WAS ONE OF THE BETTER CONTENDERS AND MAY BE IN USE-NO BODY WILL TELL ! THIS BOX SAYS IN HAND WRITING ON THE BACK "RAP USE ONLY" AND IT IS LOT RAP-1-19. WHAT DOES THAT MEAN? I HAVE NOT BEEN ABLE TO FIND ANYONE WHO WILL OR CAN TELL ME. THESE ARE A PREVIOUSLY UNKNOWN LOAD WITH A PURPLE PRIMER(PURPLE X ON THE BOX)AND NO HEADSTAMP. 1 ROUND AND BOX LABEL COPY.INFORMATION FROM TWO U.S. ARMY SOURCES DISAGREE: 1) REMINGTON ARMS PROOF- RETIRED SNIPER,2) RIFLE ANTI-PERSONNEL- CURRENT PROJECT MANAGER. NO PAPERWORK YET.ANOTHER VIEWER ADDS:"This cartridge is the .416 trimed back and necked down to .338 is now known as the .338 Lapua. It is in use with the military of the UK in the L116 sniper system manufactured by Accuracy International as the AWM. The history of the cartridge is Crtridges of the World by Frank Barnes. I hope this helps".STILL NO PAPERWORK REFERING TO THE U.S. USE OR TEST OF THIS ROUND. More submitted: "In 1985 Jim Shults wrote "Big Brass Busters " article in "Gung Ho weapons Handbook " describing the Research Armament Industries Inc. new sniping rifles . One was a .50 Browning -the other chambered in the the new .416 /.338 cartridge developed by RAI. The white cardboard cartidge box has in black ink : 20 EA. 338 / 416 LOT RAP -1-89 RAP used a custom .338 Hornaday 250 gr.bt hp match projectile in these rounds. "The model 300 rifle was developed by team lead by J.Haskins in the 1981 and 1982 as a long-range sniper rifle for US military. It was probably one of the first of purposefully designed sniper weapons, not a rework from existing military, hunting or sporting rifle. Model 300 also served as a testbed for development of the new long-range sniping ammunition, initially known as .416-.338 (metric designation 8.58x71 mm), which latter was refined by Finnish company Lapua-Nammo Oy and one day became the now-famous .338 Lapua (8.6x70mm Lapua), a true long-range number. About 1983, US Military issued a contract for some 125 model 300 rifles (along with the same number of Model 500 .50 caliber rifles). Model 300 rifle did not appear in large numbers, but it must be noted as a forerunner of many modern designs of sniper weapons, an also as a "parent" rifle for a .338 Lapua Magnum cartridge. The development team of the model 300 (and model 500) during the time worked under the many "labels" - they began the development as a RAP - Research Armament Prototypes company. Latter RAP became RAI - Research Armament Industries. Next it was purchased by the Daisy and became a Daisy Defence Systems, and finally it was bought by the Iver Johnson". In 1983, Research Armament Industries (RAI) in the United States began development of a new, long-range sniper cartridge capable of firing a 16.2-gram (250 gr), 0.338-inch (8.6 mm) diameter bullet at 914 metres per second (3,000 ft/s) that could penetrate five layers of military body armor at 1,000 m (1,094 yd) and still make the kill. After preliminary experiments, a .416 Rigby case necked down to take a 0.338-inch (8.6 mm) bullet was selected, since this diameter presents an optimum of sectional density and penetrating capability for practical spin stabilized rifle bullets (bullets up to about 5 to 5.5 calibers in length).[11] The .416 Rigby is an English big game cartridge that was designed to accommodate 325 MPa (47,137 psi) pressures. One of the disadvantages of these old cartridge cases, which were intended for firing cordite charges instead of modern smokeless powder, is the thickness of the sidewall just forward of the web. During ignition, the cartridge's base, forward to the bolt face, is not supported. The case is driven back against the bolt face which results in the stretching of the case, particularly the sidewall immediately forward of the web. When the sidewall resists the outward expansion against the chamber, the pressure stretches the case thereby increasing its length resulting in the sidewall becoming thinner at that stretch point. During the process RAI employed Brass Extrusion Labs Ltd. (BELL) of Bensenville, Illinois, to make the .338/416 or 8.58x71mm cartridge cases, Hornady produced bullets, and RAI built a sniper rifle under contract for the U.S. Navy. RAI found that the BELL cases did not fulfill the requirements. Pressed by military deadlines RAI looked for another case producer and contacted Lapua of Finland in 1984.[12] RAI was forced to drop out of the program due to financial difficulties. Subsequently, Lapua of Finland put this cartridge into limited production. The .338/416 rifle program was later cancelled when the contractors were unable to make the cartridge meet the project's velocity target 16.2 gram at 914 m/s (250 gr at 3000 ft/s), due to weak brass cases. SEE WIKIPEDIA FOR MORE INFO. S100
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