M107 projectile
The M107 is a 155 mm high explosive projectile used by many countries. It is a bursting round with fragmentation and blast effects. It used to be the standard 155 mm high explosive projectile for howitzers of the US Army and US Marine Corps, but is being superseded in the US military by the M795.
M107 projectile
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Key facts
Key facts
• Name — M107 projectile • Type — 155 mm high explosive projectile • Origin — United States • Is Ranged — yes • Is Explosive — yes • Service — 1958–present • Mass — 43.2 kg • Length — 605.3 mm • Diameter — 154.71 mm • Caliber — 155 mm • Range — 18,100 m • Filling — * TNT • Composition B • Filling Weight — 6.86 kg • Illustration — An M107 155 mm high explosive projectile with a M739A1 point detonating (PD) fuze
Development
Development
The M107 is a development of the M102 155 mm shell that was developed in the 1930s from the French Schneider 155 mm projectile for the Model 1917 Howitzer.
Specifications
Specifications
• Maximum range: • Fired from M1/M1A1 cannon on M114/M114A1 towed howitzers with Charge 7 • Fired from M126/M126A1 cannon on M109 self-propelled howitzers with Charge 7 • 14,600 m • Fired from M185 cannon on M109A1 - M109A4 howitzers with Charge 8 • Fired from M119 cannon on M198 towed howitzers with Charge 8 • 18,100 m • Fired from M284 cannon on M109A5 and M109A6 howitzers with Charge 8S • 24,000 m • Weight as fired: 43.2 kg • Explosive content: TNT 6.86 kg • Length (excluding fuze): 605.3 mm • Body diameter: 154.71 mm • Driving band diameter: 157.98 mm • Fuzes (with supplemental charge): • PD M51A5, M728 family, M557, M572, M739, M564, M577, M582, M732 • Fuzes (without supplemental charge): • M728 • Manufacturer: American Ordnance LLC & Scranton Army Ammunition Plant
Description
The body consists of a hollow steel shell containing high explosive (either TNT or Composition B) painted olive drab with yellow markings. A fuze adapter is screwed into the body and brazed in place. An eyebolt lifting plug is screwed into the fuze well to assist in transportation. The plug is removed and replaced with a fuze for firing. The complete projectile weighs 43.2 kg, is 800 mm long and contains 15.8% explosive by weight. It is a separate-loading projectile—propellant bags or modular artillery charge system (MACS) charges are loaded separately. The M107 can be fired more than 10 mi and on detonation it produces approximately 1,950 fragments. The M107 was approved for use in 1958 and issued to the army from 1959. Its intended replacement is the M795, manufacture of which began in 1999. The M198 howitzer can fire an M107 up to 18.5 km using M4A2 "White Bag" propellant. Modified M107 rounds with base bleed and new aerodynamics can extend this range to around 32 km. Despite relatively lackluster performance (Jane's describes it as having "an indifferent charge to weight ratio", "unsophisticated aerodynamic shape", "erratic fragmentation") compared to more modern high explosive rounds, it continues to be used by many countries, in particular in training exercises because of its low cost, high availability and smaller danger area than more modern designs. Its limited effectiveness also make it a useful option in peace support operations. The M107 is manufactured by several nations, sometimes with variations in the fill and or filling method, or other details, and is given a national designation. For example, those produced to UK requirements are designated L21, not M107; German examples were designated DM21. By the 1970s, the M107 was an out-of-date design, and some European armies started replacing their war stocks with modern designs such as L15. However, the M107 was retained for training purposes, because it was cheap and, being less lethal, had a smaller peacetime safety area, an important consideration given the small European training areas.
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Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article M107 projectile, revision 1364187527 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Headquarters, Department of the Army. Operator's Manual (crew): Howitzer, Medium, Towed, 155-mm, M198 (1025-01-026-6648). 4-9. 1979.
- 2.United States Congress House Committee on Appropriations Subcommittee on Department of Defense. Department of Defense Appropriations for 1980: Hearings Before a Subcommittee of the Committee on Appropriations, House of Representatives, Ninety-sixth Congress, First Session. U.S. Government Printing Office. 174–175. 1979.
- 3.Gander, Terry J. Projectile, 155 mm: HE, M107. Jane’s Information Group.
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