Lapua Magnum - Wikipedia, the free encyclopedia. Lapua Magnum. Type. Rifle. Place of origin. Finland. Service history. Used by. Multiple official and civil users. Wars. Afghanistan War. Iraq War. Production history.
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The 338 Lapua Magnum was developed in 1983 by Research Armament Co. It was based on a 416 Rigby case necked down to.338 caliber. Later Lapua. reloading manual.
Designer. Nammo Lapua Oy. Designed. 19. 89. Produced. 19. 89–present. Specifications. Parent case. Rigby, . 3. 38/4. Case type. Rimless, bottleneck.
.338 Lapua Magnum; 9.3x62; New products; Naturalis; Tactical Ammunition. Centerfire Rifle; New products; Reloading. Reloading. New products.308 Winchester. 338 Lapua Magnum Rifle Cartridge by Nosler Inc. 338 Lapua Mag. Designed for Loading & Reloading 338 Lapua Magnum Cartridges.
Bullet diameter. 8. Neck diameter. 9. Shoulder diameter. Base diameter. 14. Rim diameter. 14.
Rim thickness. 1. Case length. 69. 2.
Overall length. 93. Case capacity. 7.
H2. O)Rifling twist. Primer type. Large rifle magnum. Maximum pressure. MPa (6. 0,9. 16 psi)Ballistic performance. Bullet weight/type. Velocity. Energy. SP1,0. 05 m/s (3,3.
Looking for Reloading Data for the 338 Lapua Magnum and Berger Bullets? Loading Manual; Information. Berger Blog; Tech Talk; Success Stories. Varmint Success Stories. 338 Lapua Magnum 250 Grain Barrel Length = 26' COAL = 3.681' Optimal performance may be achieved in your rifle. RELOADING TECHNIQUES WILL BE DIFFERENT. .338 Lapua Magnum. Test barrel: 700 mm (27½”), 1 in 10” twist Primers: Large Rifle Magnum Cases: Lapua, trim-to length 69,00 mm (2.714”). .338 Lapua Magnum; 9.3x62; New products; Naturalis; Tactical Ammunition. Centerfire Rifle; New products; Reloading. Reloading. Reloading components; Bullets. 338 Lapua Reloading Data H1000.pdf. http:// Lapua Magnum and. RELOADING GUIDE. .338 Lapua Magnum cartridge next to a.338 Norma Magnum. Type: Rifle: Place of origin: Finland: Service history.338 Lapua Magnum reloading data at Reloader's Nest.
J (4,9. 67 ft. В·lbf)1. Partition. 89. 7 m/s (2,9. J (4,8. 06 ft. В·lbf)1. Lapua Scenar GB4.
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VLD9. 10 m/s (3,0. J (4,8. 93 ft. В·lbf)1.
Sierra HPBT Match. King. 82. 6 m/s (2,7. J (4,8. 92 ft. В·lbf)1. Lapua Scenar GB5. VLD8. 37 m/s (2,7.
J (5,0. 20 ft. В·lbf)Test barrel length: 7. Source(s): Vihta Vuori Powder Lapua (7. The . 3. 38 Lapua Magnum (8. Г—7. 0mm or 8. 5. Г—7. 0mm) is a rimless, bottlenecked, centerfirecartridge developed for military long- range sniper rifles. The Afghanistan War and Iraq War made it a combat- proven round with ready and substantial ammunition availability. The . 3. 38 Lapua is a dual- purpose, anti- personnel and anti- materiel round, but its anti- materiel potential is limited, due to the bullet's lower kinetic energy compared with that of the .
BMG's 3. 5. 6. 4- to- 5. The loaded cartridge is 1.
It can penetrate better- than- standard military body armour at ranges up to 1,0. Muzzle velocity is dependent on load and powder temperature, and varies from 8. J (4,8. 13 ft. В·lbf) of muzzle energy.
British military issue overpressure . Lapua Magnum cartridges with a 9. Lock. Base B4. 08 very- low- drag bullets fired at 9. L1. 15. A3 Long Range Rifle were used in November 2.
British sniper Corporal of Horse (Co. H) Craig Harrison to establish a new record for the longest confirmed sniper kill in combat, at a range of 2,4. In addition to its military role, it is increasingly used by hunters and civilian long- range shooting enthusiasts. The . 3. 38 Lapua Magnum is capable of taking down any game animal, though its suitability for some dangerous game (Cape buffalo, hippopotamus, white rhinoceros and elephant) is arguable, unless accompanied by a larger "backup" caliber: "There is a huge difference between calibers that will kill an elephant and those that can be relied upon to stop one."[6] In Namibia the . Lapua Magnum is legal for hunting Africa's Big Five game if the loads have ≥ 5,4.
J (3,9. 83 ft. В·lbf) muzzle energy.[7]History[edit]Initial development[edit]In 1. Research Armament Industries (RAI) in the United States began development of a new, long- range sniper cartridge capable of firing a 1. After preliminary experiments, a . Rigby case necked down to take a 0. The . 4. 16 Rigby is an English big game cartridge that was designed to accommodate 3. MPa (4. 7,1. 37 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 . Г—7. 1mm 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 1.
RAI was forced to drop out of the program due to financial difficulties. Subsequently, Lapua of Finland put this cartridge into limited production.[1. The . 3. 38/4. 16 rifle program was later canceled when the contractors were unable to make the cartridge meet the project's velocity target 1. Final development[edit]The current .
Lapua Magnum cartridge was developed as a joint venture between the Finnish rifle manufacturer SAKO and the British rifle manufacturer Accuracy International along with the Finnish ammunition manufacturer Lapua, or more officially Nammo Lapua Oy, which since 1. Nordic Ammunition Group (Nammo).[1. Lapua opted to redesign the .
In the new case design, particular attention was directed toward thickening and metallurgically strengthening the case's web and sidewall immediately forward of the web. In modern solid head cases, the hardness of the brass is the major factor that determines a case's pressure limit before undergoing plastic deformation. Lapua tackled this problem by creating a hardness distribution ranging from the head and web (hard) to the mouth (soft) as well as a strengthened (thicker) case web and sidewall immediately forward of the web. This resulted in a very pressure resistant case, allowing it to operate at high pressure and come within 1. Lapua also designed a 1.
Lock Base B4. 08 full metal jacket bullet, modeled after its . Lock Base bullet configuration. The result was the . Lapua Magnum cartridge which was registered with C. I. P. (Commission Internationale Permanente pour l'Epreuve des Armes Г Feu Portatives) in 1. With the procurement by the Dutch Army, the cartridge became NATO codified. The . 3. 38 Lapua Magnum fills the gap between weapons chambered for standard military rounds such as the 7.
Г—5. 1mm NATO and large, weighty rifles firing the . BMG cartridge.[1.
It also offers a tolerable amount of barrel wear, which is important to military snipers who tend to fire thousands of rounds in practice every year to acquire and maintain expert long- range marksmanship.[notes 1] Like every other comparable big magnum rifle cartridge the . Lapua Magnum presents a stout recoil.[1. An appropriate fitting stock and an effective muzzle brake will help to reduce recoil induced problems, enabling the operator to fire more rounds before getting too uncomfortable to shoot accurately. Good factory loads, multiple projectile weights and factory special application ammunition are all available.[notes 2][1. Due to its growing civilian popularity, several high quality tactical and match (semi) custom bolt actions designed for the .
Lapua Magnum are becoming available. These (semi) custom bolt actions are used with other high grade rifle and sighting components to build custom sporting and target rifles.
Law enforcement and military users[edit]. A Royal Dutch Marine ejects a shell casing from his Accuracy International .
Lapua Magnum sniper rifle. The . 3. 38 Lapua Magnum cartridge is in law enforcement or military[1. The . 3. 38 Lapua Magnum has been designated a "cartridge of interest" by the National Defense Industrial Association (NDIA). It is being groomed to replace the . Winchester Magnum and the . BMG for anti- personnel long- range service in the U. S. military. On June 1.
U. S. government issued a market survey to support a requirement for a Precision Sniper Rifle (PRS) to possibly replace the currently fielded Bolt Action SOF Sniper Systems MK 1. Winchester Magnum) and the M4. M2. 4 (7. 6. 2Г—5. NATO) chambered to safely fire factory produced "non- wildcat" . On 7 March 2. 01.
Remington MSR was declared the winner of the Precision Sniper Rifle competition. Remington announced that the MSR had won on March 8, and it was publicly confirmed on March 9. This was followed by a $7. The contract was awarded on 1. September 2. 01. 3.
Remington Defense produces the sniper rifles and utilizes two other companies for other system components, with Barnes Bullets for ammunition and Advanced Armament Corporation for muzzle brakes and suppressors; all three companies are subsidiaries of Freedom Group Incorporated.[5. Cartridge dimensions[edit]Extremely thick- walled brass results in a 7. H2. O) cartridge case capacity for the . Lapua Magnum. The exterior shape of the case was designed to promote reliable feeding and extraction in bolt action, semi- automatic, and automatic firearms alike, under extreme conditions. Lapua Magnum maximum C.
I. P. cartridge dimensions. All sizes in millimeters (mm).
Americans would define the shoulder angle at alpha/2 ≈ 2. The common riflingtwist rate for this cartridge is 2. à lands = 8. 3. 8 mm, à grooves = 8. According to the official C. I. P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) decisions and tables edition 2. Lapua Magnum case can handle up to 4.
MPa (6. 0,9. 16 psi) Pmax piezo pressure. This now prevails over the C. I. P. decisions and tables edition 2.
Lapua Magnum at 4. MPa (6. 8,1. 68 psi) Pmax maximum piezo pressure.[6. The 4. 70. 0. 0 MPa (6. Pmax maximum piezo pressure C. I. P. ruling for the . Lapua Magnum cartridge, which is based on the same case, was not accordingly changed.
In C. I. P. regulated countries every rifle cartridge combo has to be proofed at 1. C. I. P. pressure to certify for sale to consumers. This means that . Lapua Magnum chambered arms in C. I. P. regulated countries are currently (2.
MPa (7. 6,1. 45 psi) PE piezo pressure. Lapua is ambivalent on the maximum piezo pressure of this cartridge. In the article 'From an American dream to a Finnish success story'[6. Janne Pohjoisp. ää Lapua propagates the C.
I. P. 2. 00. 7 ruling of 4. MPa (6. 0,9. 16 psi) maximum piezo pressure. To further complicate matters the mentioned 5.
CUP C. I. P. copper crusher pressure in this article would translate in ≈ 4. MPa (6. 4,9. 04 psi) C.
I. P. piezo pressure according to a study on the conversion from CUP to PSI for rifle cartridges by Denton Bramwell.[6. The C. I. P. 2. 00.