The round has a burst height of 600 meters and provides illumination for about 60 seconds for an area of about 1,200 meters. The squad leader indicates the direction of fire when mounting. Powered by Hugo. There is a selector on the lower shaft for non-delay or delay impact action. It has a time setting of up to 50 seconds. The sight bracket is attached to the buffer carrier, which is fitted to the traversing screw assembly. e. Dummy. d. Multioption. c. The assistant gunner lifts the bipod and stands it on its elevating leg so that the elevating handwheel is to the rear and the plain leg is to the front. Swifty 3 from scratch; Swifty 3 split-repo setup; Swifty Troubleshooting; Mods. To make the shift, the gunner places the fingers of his right hand in the muzzle and his left hand on the left leg. Red phosphorus rounds can be fired from the M29/M29A1 at a reduced charge (maximum charge = charge 2). Both the 60mm and 120mm mortar rounds use White Phosphorus. The section leader, acting as FDC, has one deflection instead of two or more. c. The M374A3 HE cartridge is constructed from pearlitic malleable cast iron and contains about 2.10 pounds of composition B explosive. At this command, the squad proceeds as follows: a. c. The first ammunition bearer checks the barrel and ensures that--. The fuze is set manually to proximity, point detonate, or delay modes. Any target that requires that elevation, or a lower one, cannot be engaged from that position. a. This ensures that the mortar does not fire should the round slip down the barrel during the subsequent drills. This may cause the firing pin to ignite the charges if the cartridge is dropped on the fin end (. (4) Extra increments are removed if the cartridge is to be fired with less than full charge. All elements given in the fire command are repeated by the squad. The assistant gunner cleans the bore and swabs it dry. An air cavity can form on one side of a cartridge to unbalance it, causing instability in flight. This section implements STANAG 2321 and QSTAG 900 (Edition 1). It is painted white with black markings. The firing pin must be replaced and the bore swabbed. To set for delay, the selector slot should be rotated clockwise until it is aligned with the "D" mark on the ogive. The gunner places the outer edge of the baseplate against the baseplate stake so that the left edge of the cutaway portion of the baseplate is aligned with the right edge of the stake (Figure 4-7). Other armies count on 81mm mortar families. 120MM Mortar System. f. Ammunition should be stored under cover. DESCRIPTION. Excess increments should not accumulate near the mortar positions but are removed to a designated place of burning and destroyed. The mortar is mounted and the sight is installed. (4) The M567 fuze is an impact fuze that has a SQ/IMP or D function. It is fitted with a safety wire and pin that are removed immediately before firing. The mortar is within two turns of center of traverse. a. Maximum Range (meters): 7,240 (with standard fuze) . An M18 fuze wrench is used to change settings. d. The squad leader supervises the squad drill and is responsible for supervising the laying out of the equipment as shown in Figure 4-6. M252 81mm Mortars The M252 81mm medium extended range mortar (see diagram below) is a crew-served, smooth bore, muzzle loaded, high angle of fire weapon system. The fuze consists of a brass head, body assembly, and expelling charge. (3) The M84A1 fuze is a single-purpose, tungsten-ring, mechanical-time fuze used with the 81-mm M301A3 illumination cartridge. The squad leader stands behind the mortar where he can command and control his squad. It contains white phosphorus that produces white smoke on contact with air. If required, the gunner/assistant gunner lowers the barrel so that the breech plug engages with the open end of the socket, and he uses the barrel as a lever to move the socket. ) or https:// means youve safely connected to the .gov website. The superior flow characteristics of these BALL POWDER . The term "indirect fire" means firing at an enemy without having a. The M889 HE cartridge (M252 onlyXUS Marine Corps) is of the same construction as the M821 cartridge in every detail except the fuze, which is the M935. d. The ammunition is protected from mud, sand, dirt, and water. After the 30-minute waiting period, the dud is still dangerous but can be approached and removed carefully or destroyed in place by qualified disposal personnel. c. Authorized Cartridges. Each squad member should be able to perform all the following premount checks: a. Each cartridge weighs about 10 pounds and is provided with the M223 propelling charge, consisting of four horseshoe-shaped increments fitted around the tail. If the barrel is cool enough to handle, the crew removes the round as described below. (5) Do not leave unused increments unburned in combat operational areas. It engages the 1 3/4-inch flats on the setting ring or the fuze head. The M853 and M301A3 illuminating ammunition are described herein. (d) Firing is slowed if mask clearance must be checked before each firing but this can be eliminated if minimum mask clearance is determined. (2) The M84 fuze is a single-purpose, powder-train, mechanical-time fuze used with the 81-mm M301A1 and M301A2 illuminating cartridges. To dismount the mortar, the squad leader commands, OUT OF ACTION. It uses the M185 propelling charge that consists of eight increments fitted into the spaces between the fins and held by a propellant holder. The propelling charge is contained in four horseshoe-shaped, felt-fiber containers or nine wax-tested, cotton cloth, bag increments. If it gets wet or dirty, it must be wiped off at once. The standard infantry support weapon is the M-252 81mm mortar, which lobs a 10 lb. The ignition cartridge strikes the firing pin and detonates, which causes a flash that passes through the radial holes in the shaft. MFCS Dismounted. The ammunition that can be fired by the 81-mm mortar, M252, is identified and described herein. As a longstanding partner of armed forces around the globe, Rheinmetall supplies a wide array of mortar systems and ammunition. It is a smooth-bore, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to light infantry, air assault, and airborne units across the entire front of a battalion zone of influence. c. Crest Clearance. The first ammunition bearer holds the barrel until the assistant gunner has removed the mount. b. b. The propellant train (except the training cartridge) consists of an ignition cartridge and propellant charges. The assistant gunner exposes 8 inches (200 millimeters) of elevation shaft, leaving the elevation handwheel unfolded. If, upon removal of the safety wire, a buzzing sound in the fuze is heard, the round should not be used. Red phosphorus cartridges (M252 only) are stored the same as HE cartridges. b. Mount, M177, in folded position. After the barrel cools, the gunner removes the sight and firing pin. Official websites use .mil Share sensitive information only on official, secure websites. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. LARGE DEFLECTION AND ELEVATION CHANGES. The powder increments, mainly, should not be exposed to direct sunlight. b. The term "danger close" is included in the call for fire when there are friendly troops or positions within a prescribed distance of the target, specifically 600 meters for artillery or mortars . It has a time setting of up to 25 seconds. An internal clock mechanism provides nine seconds of safe air travel (610 to 2,340 meters along trajectory for charge 0 through 9, respectively). b. The enemy will use them. Cartridges assembled with the M532 fuze must be fired above charge 0. Army Publishing Directorate The second page includes a chart with range and deflection (presumably for the same kind of shells), as well as notes which give additional instructions. .50: BALL, M2 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR WEAPON, 5.56MM, M16A1 WEAPON, 5.56MM, M16A2 WEAPON, 5.56MM, M249 AND WEAPON, 5.56MM, M4 FIRING CARTRIDGE, BALL, M855 CARTRIDGE, TRACER, M858 CARTRIDGE, BALL, M193 CARTRIDGE, TRACER, M196 (S&I BY PROP SEE DETAILS, FOOTNOTES), MACHINE GUN, 7.62-MM: M60 ON MOUNT, MACHINE GUN: 7.62-MM, M122 AND MACHINE GUN, 7.62-MM: M73 ON TANK, COMBAT, FULL-TRACKED: 105-MM GUN, M60 SERIES AND RIFLE, 7.62-MM: M14; FIRING CARTRIDGE, 7.62-MM, BALL, NATO, M59; CARTRIDGE, 7.62-MM, BALL, NATO, M80; CARTRIDGE, 7.62-MM: AP, NATO, M61 AND CARTRIDGE, 7.62-MM: TRACER, NATO, M62 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-Q-1 FOR PROJECTILE, HE, M404 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-J-4 FOR PROJECTILE, HE, M404 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-T-1 FOR PROJECTILE, HE: M509A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED, 8-INCH, M110A2 FOR LOW ANGLE FIRING PROJECTILE, HE, M509A1 USING REGISTRATION DATA FOR PROJECTILE, HE, M106 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER: M2 AND M2A1 ON HOWITZER, HEAVY, TOWED: 8-INCH, M115; CANNON, 8-INCH HOWITZER: M47 ON HOWITZER, HEAVY, SELF-PROPELLED, FULL TRACKED: 8-INCH, M55; CANNON, 8-INCH HOWITZER: M2A1E1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110; FIRING PROJECTILE, HE: M106 AND PROJECTILE, CHEMICAL: M426 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A1 AND CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A2 AND FIRING PROJECTILE, HE, M106 PROJECTILE, CHEMICAL, M426 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER: M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED, 8-INCH, M110A2; FIRING PROJECTILE, HE, RA; M650 AND PROJECTILE, ATOMIC: M753 AND M753A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A2 FIRING PROJECTILE, HE, M509A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 14.5-MM GUN, M31; ARTILLERY TRAINER FIRING FUZED CARTRIDGES, M181, M182 AND M183 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 20-MM, AUTOMATIC, M139; FIRING CARTRIDGE, 20-MM, HEIT, M599; CARTRIDGE, 20-MM, TPT, M206 AND CARTRIDGE, 20-MM, APIT, M601 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 25MM GUN, M242 ON INFANTRY FIGHTING VEHICLE, M3 FIRING CARTRIDGE, APDS-T, M791 CARTRIDGE, HEI-T, M792 CARTRIDGE, TP-T, M793 CARTRIDGE, TPDS-T, M910 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, AUTOMATIC, 40-MM, M1 AND GUN, DUAL AUTOMATIC, 40-MM, M2; FIRING CARTRIDGE, HE-T, SD, MK 2 WITH FUZES, PD, MK 27, M64A1, M71 OR NO. M224A1 60 MM LWCMS Mortar The 60mm mortar, M224A1 Lightweight Company Mortar System (LWCMS), is a smoothbore, muzzle loaded, high angle of fire weapon. The 81mm weapons platoon consisted of the headquarters platoon and four mortar squads. When the gunner is satisfied with his sight picture he announces, "Up.". Range Minimum to maximum 83 to 5,608 meters Rate of Fire . Ammunition Lot Number. The M532 fuze is a radio doppler fuze that has a proximity (PROX) or SQ/IMP function. d. The gunner rough levels the cross-level bubble by making the bubble bounce from one side to the other. The propellant increments are ignited, which produce rapidly expanding gases that force the cartridge from the barrel. The gunner unlocks the barrel clamp and rotates the barrel, unlocking the breech plug from the rotating socket of the baseplate. This section discusses the characteristics and nomenclature of each component (Figure 4-2). on Amazon.com. The gunner places the announced deflection on the sight (without disturbing the lay of the weapon) and looks through the sightunit. He indicates the initial direction of fire by pointing in that direction and commands ACTION. The ignition cartridge (with primer) is fitted into the base of the fin shaft. h. Where the ground is uneven and there is no level surface for the bipod, the gunner can adjust the plain leg. He levels all bubbles. Proximity-fuzed short cartridges, which are duds, contain a complete explosive train and impact element. Theme by TechDoc. With standard mortar, the maximum effective range is close to 4,000 metres; with a long-range system, this increases to nearly 4,500 metres. The Mark 4 and 5 barrels were introduced during World War 2 and have a much increased range. Red phosphorus/white phosphorus--M819 and M375-series. The upper clamp is fitted with a locking arrangement that consists of a curved handle and a spring-loaded locking rod, which is ball-shaped at its lower end. If the mortar section is to operate quickly and effectively in accomplishing its mission, mortar squad members must be proficient in individually assigned duties. b. It is set using the bladed end of the M18 fuze wrench. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and normally utilizes a FDC. d. When the barrel reaches the horizontal position, and not before, the assistant gunner moves the thumb of each hand over the muzzle. The terms cannon and barrel are used interchangeably in this chapter. Mount They are assembled with either an M524-series, M526-series, or M567 fuze. The M821A2/821A1/889A1 consists of the following major components: M935 Point Detonating Fuze or M734/734A1 Multi-Option Fuze. The fuze setter, M25, sets M84-series time fuzes. He exposes 4 inches (100 millimeters) of elevation shaft and folds the handle. The muzzle end has a short tapered lead-in which acts as a . Firing tables are used to determine the correct charge for firing. XM1210. c. The assistant gunner moves into position to the front of the bipod on his right knee and grasps the bipod legs (palms up), lifting until they clear the ground enough to permit lateral movement. The assistant gunner attempts to maintain the traversing mechanism on a horizontal plane. The lower clamp is shaped and bored on each side to house the buffer cylinders. The cartridges are painted olive drab with yellow markings. Short cartridges can be expected when firing below charge 4. Bear in mind that these are my personal opinions, experiences, and . The cartridge weighs about 9.4 pounds. e. The M362A1 and M362 HE cartridges are of steel forge construction and contain about 2.10 pounds of composition B explosive. The aluminum tail assembly has six integral fins equally spaced around the rear, which stabilize the round in flight. These are NDI items . The fuze consists of a brass head, body assembly, and expelling charge. If the primer of the ignition cartridge is dented, the first ammunition bearer attempts to replace the safety wire and places the round in a marked, safe location for disposal by ordnance personnel. If the round does not fire, the gunner tests the barrel for heat. .50 MACHINE GUN, M3; FIRING CARTRIDGE, CAL. It is used for records such as reports on condition, malfunctions, and accidents. (1) The barrel is clean and free from grease and oil both inside and out. 0.30, BROWNING, M1919A4, M1919A5 AND M1919A6 {TO 39A-5 AF-32} (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, MACHINE, CAL. The M252 81 mm medium weight mortar is a British-designed smooth bore, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to light infantry, air assault, and airborne units across the entire front of a battalion zone of influence. The equipment is placed out the same as for the gunner's examination (Chapter 9). It uses the M772 mechanical time fuze and weighs about 10.6 pounds. Additional information is included on an ammunition data card inside each container. General Dynamics Ordnance and Tactical Systems' 81mm Roll Controlled Guided Mortar (RCGM) provides an affordable, flexible solution to meet that need. b. The gunner can depress the barrel, if necessary, to provide easier access to the firing pin. a. The round is still safe to handle and transport if the safety wire is reinserted. Figure 4-4. If not, he may still fire at the desired range by selecting a charge zone having a higher elevation. The barrel clamps are then closed. VERY NICE condition! b. The assistant gunner checks the bipod and ensures that--. (2) The breech plug is screwed tightly to the barrel. b. The leg-locking handwheel must then be tightened, ensuring the teeth are correctly meshed. After the rounds have been removed, they should always be handled with two hands to prevent accidental dropping. The second ammunition bearer retrieves the aiming posts. This cartridge is ballistically matched to the M374A2, M374A1, and M375 HE cartridges, and weighs about 9.12 pounds. This action breaks an internal sheet pin and internal wire, thereby disabling the proximity function. The cartridge must not be fired below charge 3. 81 mm HE mortar projectiles generally contain anywhere between 400 g and 680 g of HE and have a maximum range of approximately 6,500 m. 82 mm HE mortar projectiles generally contain anywhere between 392 g and 680 g of HE and have maximum ranges of between 3,000 - 5,500 m. OPERATOR`S MANUAL FOR MORTAR, 81-MM, M252 (NSN 1015-01-164-6651) (EIC 4SK){TM . ), FIRING TABLES FOR, CANNON, 155MM, HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A4 AND CANNON, 155MM, HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A6 AND CANNON, 155MM, HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM, HOWITZER, XM776 ON HOWITZER, MEDIUM, TOWED, 155MM, XM777 FIRING PROJECTILE, HE, M795 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M284A2 CHROME ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777, M777A1 AND M777A2 AND CANNON, 155MM HOWITZER, M776 CHROME ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, SMOKE, WP, M1121 INCLUDES FIRING TABLES FOR PROPELLANTS: M119A2 (CHARGE 7R), M203A1 (CHARGE 8S), AND MODULAR ARTILLERY CHARGE SYSTEM (MACS) PROPELLANTS: M231 (CHARGES 1L AND 2L), M232 AND M232A1 (CHARGES 3H, 4H AND 5H) (S&I BY PROP SEE FOOTNOTES). At the muzzle end is a cone-shaped blast attenuator device (BAD) that is fitted to reduce noise. It is assembled with the M772A1 MTSQ. He places the sight case and aiming posts to the left front of the mortar position. b. 0.50, M8 (REPRINTED W/BASIC INCL C1-2) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MACHINE GUN, CALIBER .50: BROWNING, M2 (HEAVY BARREL, TURRET TYPE) ON MOUNT, MACHINE GUN, TRAILER MOUNTED: MULTIPLE CALIBER .50 MACHINE GUN, M55 FIRING CARTRIDGE, CALIBER .50: API, M8 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MACHINE GUN, CALIBER .50: FICED, M85 TANK, COMBAT, FULL TRACKED: 105MM GUN, M60 SERIES FIRING CARTRIDGE, CALIBER .50: API, M8 CARTRIDGE, CALIBER .50: API-T M20 CARTRIDGE, CALIBER .50: BALL, M33 CARTRIDGE, CALIBER .50: TRACER, M17 (S&I BY PROP SEE DETAILS, FOOTNOTES), MACHINE GUN, CAL. The M252 system . (See FM 7-90 for a discussion of the duties of the platoon headquarters.). The assistant gunner places his right hand palm up (1 inch from the muzzle end) under the BAD and his left hand palm down (1 inch from the muzzle end) on top. e. The assistant gunner passes the round to the first ammunition bearer who inspects it for the cause of the misfire. The fuze threads and fuze well threads are inspected for damage. He then checks the sight picture to ensure he is within 20 mils of a proper sight picture. It was even a tool used by airborne units, and was dropped in parachute bundles during Operations Neptune, Market Garden, and Varsity. (7) When opening an ammunition box, the ammunition bearer ensures the box is horizontal to the ground, not nose- or fin-end up. (3) The securing strap is correctly located, securing the barrel clamps and buffers to the plain leg. When firing under the control of an FDC, he reports to the FDC that mask clearance cannot be obtained at a certain elevation.
August 4
81mm mortar range table81mm mortar range table
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