The fuze is nicely marked and is dated 1940. b. Cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the US Marine Corps and US Navy only. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. The M252 81mm mortar is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. The settings are obtained from the range tables and are applied using a wrench (number 9239539) or a 1 3/4-turn open-end wrench. FM 23-90 Chptr 4 81-mm Mortar, M252 - GlobalSecurity.org 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 fuze body is graduated from 0 to 25 seconds in 1-second intervals; 5-second intervals are indicated by bosses. Fuze, PD, for 81mm mortar rounds, Italy, WWII, inert a. b. Ammunition is typed according to use (Table 4-2). It has a time setting of up to 50 seconds. M120/M121 120 mm Mortar. He places his thumbs alongside the forefingers, being careful to keep both hands away from the muzzle. The M29 would become the standard American mortar in the upcoming Vietnam War. . The powder increments, mainly, should not be exposed to direct sunlight. The fuze wrench, M18, assembles the fuze to the cartridge, and the bladed tip on the end sets PD-type fuzes. The standard infantry support weapon is the M-252 81mm mortar, which lobs a 10 lb. (2) The barrel is locked to the baseplate, and the open end of the socket points in the direction of fire. TM - Technical Manuals (Range 9) TM - Technical Manuals (Range 10) TM - Technical Manuals (Range 11-4) TM - Technical Manuals (Range 11-5) . Fuzes are not disassembled. Several types of HE ammunition are used in the 81-mm mortar, M252. FIRING TABLE FOR CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3; AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B; AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 FIRING PROJECTILE, GUIDED, M712 (COPPERHEAD) WITH SHAPED TRAJECTORIES (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM, HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, 109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 FIRING PROJECTILE, BASE-BURN, M864 AND M864A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), PRELIMINARY AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, XM982 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, XM982 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA FOR CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, M982 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 165-MM GUN, M135 ON COMBAT ENGINEER VEHICLE, FULL TRACKED, M728; FIRING CARTRIDGE, 165-MM, HEP, M123A1 AND 165-MM, TP-T, XM623 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 175-MM GUN, M113 AND M113A1 ON GUN, FIELD ARTILLERY, SELF-PROPELLED: 175-MM, M107; FIRING PROJECTILE, HE, M437A2 AND M437A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICERS (XOS) MINIMUM QUADRANT ELEVATION WITH CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1; HOWITZER, LIGHT, TOWED, 105MM, M119A2; HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING WITH PROPELLING CHARGES, M67 AND M200 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICER S (XO S) MINIMUM QUADRANT ELEVATION WITH CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5/A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1/A2 FIRING WITH PROPELLING CHARGES, M231, M232, AND M232A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RAPID FIRE TABLES FOR CALCULATION OF THE EXECUTIVE OFFICERS (XOS) MINIMUM QUADRANT ELEVATION WITH CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6; AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A7, AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 AND HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING WITH PROPELLING CHARGES, M231, M232, AND M232A1 (S&I BY PROPONENT, SEE DETAILS, FOOTNOTES), ADDENDUM TO FTR LANCE-B-1 FOR WARHEAD SECTION, GUIDED MISSILE, HE: M251 (U) (S&I BY PROP SEE DETAILS, FOOTNOTES), Search Army publications and forms by Number, Title, or Record Detail. Safety before firing is provided by a safety wire, which must be removed just before firing. The muzzle end has a short tapered lead-in which acts as a . [Firing and Deflection Conversion Tables] - The Portal to Texas History The fuze is screwed into the cartridge body, and it is seated and secured using an M18 wrench. After the rounds have been removed, they should always be handled with two hands to prevent accidental dropping. When set at delay, the fuze train causes a 0.05-second delay before functioning. Barrel (with blast attenuator device) The 81mm weapons platoon consisted of the headquarters platoon and four mortar squads. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and normally utilizes a FDC. He must ensure that the ball-shaped end of the locking rod is secured in its recess by the locking latch. Washington DC 20310-0107, ADRP - Army Doctrine References Publications, ATTP - Army Tactics, Techniques, and Procedures, FY Publication Status Report (CAC required for access), Publishing Resources (CAC required for access), PC/PCO/FMO/EPCO Directory (CAC required for access), usarmy.pentagon.hqda-apd.mbx.customer-service@army.mil, GUN, MACHINE, CAL. 107 Army Pentagon Mount, M177, in folded position. When set at SQ, the fuze functions on point impact or graze contact. A plain leg is fitted to a stud on the elevating leg and is secured by a leg-locking handwheel. The mortar is mounted and the sight is installed. The traversing screw assembly is fitted to the clamp assembly, which is pivoted in the center on an arm attached to the elevating leg. This may cause the firing pin to ignite the charges if the cartridge is dropped on the fin end (. (d) Firing is slowed if mask clearance must be checked before each firing but this can be eliminated if minimum mask clearance is determined. (a) Since the mortar is normally mounted in defilade, there could be a mask such as a hill, tree, building, or rise in the ground. (3) The M256-series fuze has an SQ/IMP function only. On its right side, the clamp is recessed to receive the ball end of the locking rod. Attached to the right of the screw is the traversing handwheel. The barrel is then rotated a quarter turn to unlock it from the socket, and it is placed in an area designated by the squad leader. .50 MACHINE GUN, M55 AND MACHINE GUN, CAL. Both the 60mm and 120mm mortar rounds use White Phosphorus. The M375 cartridge uses the M90 propelling charge while the M375A2 and M375A1 cartridges use the M90A1 propelling charge. The M821 HE cartridge (M252 only) is a British-made cartridge fitted with the US M734 multioption fuze. The wrench (P/N 9349539) sets M772 MT and M768 time fuzes. 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. In any case, the gunner must ensure that the cartridge does not strike an obstacle. *FREE* shipping on qualifying offers. The enemy will use them. 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 . In addition to loading, he swabs the bore after 10 rounds have been fired or after each fire mission. He lays for deflection, taking the proper sight picture. Mortar Weapon Systems - USAASC The pile is covered with a double thickness of tarpaulin. 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. It is fitted with a standard pull wire and safety pin that are removed immediately before firing. e. Care, Handling, and Preservation. If he is not within 20 mils, the gunner and assistant gunner must make another large shift before moving on. He moves the mortar until the vertical line of the sight is aligned approximately on the aiming post. 4-11. OPERATOR`S MANUAL FOR MORTAR, 81-MM, M252 (NSN 1015-01-164-6651) (EIC 4SK){TM . c. Upon receiving the command REFER, REALIGN AIMING POST, two actions take place at the same time in the mortar squad. Any target that requires that elevation, or a lower one, cannot be engaged from that position. The types of fuzes described in this paragraph are point detonating, proximity, mechanical time, multioption, and dummy. An M18 fuze wrench is used to change settings. a. System (including basic issue items) When a large number of cartridges are needed for a mission, they may be removed from the containers and prepared. The mortar is within two turns of center of traverse. The M821A2/821A1/889A1 consists of the following major components: M935 Point Detonating Fuze or M734/734A1 Multi-Option Fuze. In charge was the platoon commander - normally a lieutenant. The following are authorized (Standard B) cartridges for the 81-mm mortar, M252: Each cartridge has fins around the tail to stabilize it in flight and to cause it to strike fuze-end first. The sight is laid on two aiming posts (placed out 50 and 100 meters from the mortar) on a referred deflection of 2800 mils and an elevation of 1100 mils. The fuze is set manually to proximity, point detonate, or delay modes. He then checks the sight picture to ensure he is within 20 mils of a proper sight picture. c. The M375A2, M375A1, and M375 cartridges may also be used. This may preclude moving the bipod. The BAD is removed only by qualified maintenance personnel. It has no safety pins or wires to reduce preparation time. The gunner is given an administrative command to lay the mortar on a deflection of 2860 or 2740 mils. When targets are beyond such irregularities, a clearance of at least 30 meters should be allowed to ensure maximum effect over the target area. The cannon has a crew-removable breech plug and firing pin. It weighs about 9.05 pounds. Check the post SOP before applying the following procedure: (1) Select a place at least 100 meters from the mortar position, parked vehicles, and ammunition piles. The M252 is highly accurate up to ranges of 4500m to 5700m depending on the The cartridge must not be fired below charge 3. M252A1 81mm Mortar: Maximum Range (meters): 5,935; Ammunition: War reserve HE (M821A3), red phosphorus smoke (M819), visible light illumination (M853A1), infrared illumination (M816), war reserve and training HE (M889A4), and FRP . He ensures that the firing pin recess is facing upwards. He tightens the leg-locking handwheel (ensuring the teeth are correctly meshed) and fastens the securing strap over the arm and around the buffers. The 81mm mortar is a portable, mobile, medium mortar at the infantry's disposal. The first ammunition bearer shakes the barrel to dislodge any remnants from the last round fired, and he lowers the barrel into the rotating socket of the baseplate. The M374 cartridge is fitted with the M90 propelling charge. As soon as the sight data are announced, the gunner places it on the sight, lays the mortar for elevation, and traverses onto the aiming post by turning the traversing handwheel and adjusting nut in the same direction. If, upon removal of the safety wire, a buzzing sound in the fuze is heard, the round should not be used. WP cartridges are stored with the fuze end up. 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 first table is a chart that shows range and elevation for firing particular mortar shells. 120mm IHE grenade DM91. I say 120s are bad because they suffer from terrible dispersion even when not shooting at 6km. Share sensitive information only on official, secure websites. 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. Features: The M252 81mm Medium Extended Range Mortar is a crew-served, medium weight mortar which is highly accurate and provides for a greater range (4,500 meters to 5,650 meters) and lethality than the previous 81mm mortar. c. The first ammunition bearer checks the barrel and ensures that--. He places firing data on the sight and lays the mortar for deflection and elevation. Mount This cartridge is ballistically matched to the M374A2, M374A1, and M375 HE cartridges, and weighs about 9.12 pounds. U.S. Mortars of World War II - World War Media FM 23-90 Chptr 4 81-mm Mortar, M252 - GlobalSecurity.org All mortar cartridges are painted to prevent rust and to identify their type. Complete cartridges are always handled with care. . After the bands are broken and the box opened, the rounds should be removed by allowing them to roll out along the lid of the box (Figure 4-8). Weights (pounds) System (including basic issue items) Barrel (with blast attenuator device) Mount M3A1 Baseplate REFERRING OF THE SIGHT AND REALIGNMENT OF AIMING POSTS USING M64 SIGHT. HE Guided Mortar is in development. The M751 is fitted with a smoke charge that operates on impact. Proximity (VT). Maximum Range (meters): 7,240 (with standard fuze) . (3) The securing strap is correctly located, securing the barrel clamps and buffers to the plain leg. a. The M821/M889 are 81mm HE Mortar Cartridges. XM1210. With the clamps facing away from him, the assistant gunner traverses the buffer carrier to the traversing handwheel and folds the handle. He opens the cross-level handwheel, traversing handwheel, and barrel clamp. Bear in mind that these are my personal opinions, experiences, and . The principal factors affecting height of burst are the angle of approach to the target and the reflectivity of the target terrain. Target terrain, such as ice and dry sand, gives lowest burst heights, whereas water and wet ground give highest burst heights. Fired . (1) The rotating socket is free to move in a complete circle. The M751 fuze is the only dummy fuze used with the 81-mm mortar. When a misfire occurs, any member of the squad immediately announces, "Misfire." f. The open end of the socket must continue to point in the direction of fire. .50: BROWNING, M2 (HEAVY BARREL, TURRET TYPE) ON MOUNT, MACHINE GUN, TRAILER MTD: MULTIPLE CAL. 81mm ML 3-inch | Weaponsystems.net 81mm 120mm 60mm . Standard A ammunition for the M29A1 mortar is Standard B for the M252 mortar (, Light green Yellow band with red markings. Before the mortar is mounted, the squad must perform premount checks. All PD fuzes are superquick--detonate on impact. The 81-mm mortar, M252, is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. The Marines' Trusty Mortar Is Getting a Major Upgrade - Popular Mechanics c. The moisture-resistant seal of the container is broken when the ammunition is to be used. At the same time, the first ammunition bearer moves out on the double to realign the aiming posts. 81mm smoothbore mortar Barrel length 1.28 m Muzzle velocity 225 m/s Elevation +45 to +85 Traverse 18 Fire control Sights C2 indirect fire sight with illumination Firepower Rate of fire 20 rpm maximum 15 rpm normal 1 to 12 rpm sustained Range 5.650 m maximum 100 m minimum Media 81mm L16A2 When the approximate alignment is completed, the gunner signals the assistant gunner to lower the bipod by pushing down on the mortar. b. The cannon assembly consists of the barrel that is sealed at the lower end with a removable breech plug, which houses a removable firing pin (Figure 4-3). During firing, the breech plug on the barrel is sealed and locked to the rotatable socket in the baseplate. Each squad member should be able to perform all the following premount checks: a. He exposes 4 inches (100 millimeters) of elevation shaft and folds the handle. The fuze should already be fitted to the cartridge. A securing strap is attached to the plain leg for securing the bipod in the folded position. 60mm, 81mm, and 120mmMortar Increments. That is generally how I use mortars. Long Range PGK. (5) Do not leave unused increments unburned in combat operational areas. Correct way to open an ammunition box. 9301 Chapek Road., Bldg.1458 (1) Mask clearance and overhead clearance are sufficient. M252 81mm Medium Extended Range Mortar - Specifications He has the duty of preparing the ammunition and passing it to the assistant gunner. Light tree foliage and light vegetation affect the height of burst only slightly, but dense tree foliage and dense vegetation increase the height of burst. a. 81MM M252A1. Examples are: When the fuze of the misfired round reaches the BAD, the assistant gunner stops the round with his thumbs (he does not touch the fuze) and carefully removes it from the barrel. The first ammunition bearer holds the barrel until the assistant gunner has removed the mount. FT 81-AI-3 Firing Tables Mortar, 81mm: M28A1 and M29 Mortar 81mm Self Proximity fuzes withstand normal handling without danger of detonation or damage when in their original packing containers or when assembled to projectiles in their packing containers. A spring-loaded locating catch is behind the elevating gear housing, which locates the plain leg in its supporting position for level ground. b. c. Crest Clearance. A proximity fuze is an electronic device that detonates a projectile by means of radio waves sent out from a small radio set in the nose of the projectile. They use the M5 propelling charge that consists of eight cloth bags attached to the tail unit. f. Installation. Once set to act as an impact fuze, the mechanism cannot be reset for PROX. The elevation change announced must be less than 90 mils and more than 35 mils. The cartridge weighs about 9.12 pounds. It uses the M772 mechanical time fuze and weighs about 10.6 pounds. This section discusses the characteristics and nomenclature of each component (Figure 4-2). The cartridge uses the M218 propelling charge, which consists of four horseshoe-shaped increments fitted around the tail. (2) The M524-series fuze has two function settings: superquick/impact (SQ/IMP) and delay. News. (5) With the exception of a few unused increments (within the same ammunition lot number) as replacements for defective increments, excess powder should be removed from the mortar position. c. The M374A3 HE cartridge is constructed from pearlitic malleable cast iron and contains about 2.10 pounds of composition B explosive. 4-4. The adjustment ring has six raised ribs for use in conjunction with fuze setter, M25, and a setting indicator rib (marked SET) about half the height and width of the other six ribs. From introduction up to halfway World War 2 the ML 3-inch had a poor range of up to 1.45 km. The gunner should expose 6 inches (150 millimeters) of elevation shaft and center the buffer carrier. At this command, the squad proceeds as follows: a. Training practice is used only for training. Attached to the arm is the cross-leveling mechanism, which is attached to the clamp assembly at its upper end. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. (703) 614-3727, Office of the Chief Information Officer (The handle of the wrench is turned counterclockwise.) (4) The bipod locking latch is locked, securing the barrel clamps. At the muzzle end is a cone-shaped blast attenuator device (BAD) that is fitted to reduce noise. d. The gunner rough levels the cross-level bubble by making the bubble bounce from one side to the other. M252 mortar - Wikipedia Finally, the assistant gunner loosens the leg-locking handwheel, presses the spring-loaded locating catch, and raises the plain leg behind the buffer cylinders until it touches the traversing handwheel. The fuze consists of a brass head, body assembly, and expelling charge. M327 mortar is an extended range mortar system operated by Marine Corps Artillery Units. c. Mechanical Time. FT 81-AI-3 Firing Tables Mortar, 81mm: M28A1 and M29 Mortar 81mm Self propelled M125A1 and M125 Carrier, 81mm Mortar Tracked XM755 [US Army.] Burst Height. To convert the fuze from PROX to SQ/IMP, the top of the fuze must be rotated 120 degrees (one-third turn) in either direction. An 81 mm mortar is a medium-weight mortar. M3A1 Baseplate One-quarter turn on the adjusting nut equals one turn of the traversing handwheel. Do not burn increments in piles but spread them in a train 1 to 2 inches deep, 4 to 6 inches wide, and as long as necessary. While the assistant gunner supports the barrel, the gunner slackens the leg-locking handwheel, releases the locating catch, and positions the plain leg. The M819 cartridge (M252 only) has a cylindrical body and contains red phosphorus that produces white smoke on contact with air. 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 round fires, the mortar is re-laid on the aiming point and firing is continued. ), FIRING TABLES FOR CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 FIRING PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), 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, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777A1 FIRING PROJECTILE, HERA, M549 PROJECTILE, HERA, M549A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND 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, HERA, M549 AND PROJECTILE, HERA, M549A1 (S&I BY PROPONENT, SEE DEAILS, FOOTNOTES.

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81mm mortar range table