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(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. The cartridge uses the M218 propelling charge, which consists of four horseshoe-shaped increments fitted around the tail. e. The M362A1 and M362 HE cartridges are of steel forge construction and contain about 2.10 pounds of composition B explosive. 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. Overhead interference can be branches of trees or roofs of buildings. Target terrain, such as ice and dry sand, gives lowest burst heights, whereas water and wet ground give highest burst heights. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and normally utilizes a FDC. . The fuze body is graduated from 0 to 25 seconds in 1-second intervals; 5-second intervals are indicated by bosses. The safety wire must be removed before firing. The M252 system . The gunner is given a deflection and elevation change in a fire command causing the gunner to shift the mortar between 200 and 300 mils for deflection and between 100 and 200 for elevation. The BAD is removed only by qualified maintenance personnel. 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 e. The squad leader picks up the aiming posts and sight. In the U.S. Army and U.S. Marine Corps, it is normally deployed in the mortar platoon of an infantry battalion. The M374A2 and M374A1 cartridges are fitted with the M90A1 propelling charge. The cartridge is dropped down the barrel, fin-end first. (2) The breech plug is screwed tightly to the barrel. b. The propelling charge consists of an ignition cartridge and removable propellant increments. The squad leader indicates the direction of fire when mounting. Joint Tables of Allowance; PB - Professional Bulletins; STP - Soldier Training Publications; TC - Training Circulars; . The gunner moves the mortar as the assistant gunner steadies it. Cartridges assembled with the M532 fuze must be fired above charge 0. They function normally in light rain; however, heavy rain, sleet, or snow can cause an increase in the number of early bursts. e. Care, Handling, and Preservation. When cartridges have been prepared for firing, but are not used, all powder increments and safety wires are replaced. (2) Burn all dead grass or brush within 30 meters around the burning place. 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. 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, HE, M795 PROJECTILE, HE, M795 IM PROJECTILE, HE, M1122 PROJECTILE, IR ILLUMINATING, M1123 PROJECTILE, ILLUMINATING, M1124 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 DETAILS, FOOTNOTES) . If water is not available, the gunner must stand clear of the mortar until the barrel is cool. It is used for records such as reports on condition, malfunctions, and accidents. These are NDI items . He is also the squad driver. The cannon has a crew-removable breech plug and firing pin. If the barrel is cool enough to handle, the crew removes the round as described below. These fuzes use a clockwork mechanism to delay functioning for a specific time. c. The M374A3 HE cartridge is constructed from pearlitic malleable cast iron and contains about 2.10 pounds of composition B explosive. The lower clamp is shaped and bored on each side to house the buffer cylinders. When the baseplate is in position, the first ammunition bearer lowers the breech plug into the rotating socket and rotates the barrel a quarter of a turn to lock it. Identification. 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 . 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. Both the 60mm and 120mm mortar rounds use White Phosphorus. Disposal Precautions. They use the M5 propelling charge that consists of eight cloth bags attached to the tail unit. Theme by TechDoc. OPERATOR`S MANUAL FOR MORTAR, 81-MM, M252 (NSN 1015-01-164-6651) (EIC 4SK){TM . Short cartridges can be expected when firing below charge 4. 0.30, BROWNING, M1917A1; GUN, MACHINE: CAL. Attached to the arm is the cross-leveling mechanism, which is attached to the clamp assembly at its upper end. Safety before firing is provided by a safety wire, which must be removed just before firing. It has no safety pins or wires to reduce preparation time. He releases the securing strap, loosens the leg-locking handwheel, and lowers the plain leg until the locating catch engages in the recess. b. 120MM Mortar System. 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. MC Medical Guide; Client-side mods; TFAR 1.x for players; An official website of the United States government. LARGE DEFLECTION AND ELEVATION CHANGES. Cartridges assembled with the M532 fuze must be fired above charge 0. If the line of sight clears the mask, it is safe to fire. It has a time setting of up to 25 seconds. The 0-second boss is wider and differs in shape from the other body bosses; the safe setting position is indicated by the letter "S" on the fuze body. From introduction up to halfway World War 2 the ML 3-inch had a poor range of up to 1.45 km. It has a time setting of up to 50 seconds. (5) Do not leave unused increments unburned in combat operational areas. The enemy will use them. b. A securing strap is attached to the plain leg for securing the bipod in the folded position. (2) Color code. All rounds are colored according to their type. 120mm IHE grenade DM91. d. Climatic Effects. He positions the lower barrel clamp against the lower stop band on the barrel and secures the upper barrel clamp. Each round is stenciled with the ammunition lot number, type of round, type of filler, and caliber. The striker has been modified to be able to use German and Italian patterns of 81mm mortar . The types of fuzes described in this paragraph are point detonating, proximity, mechanical time, multioption, and dummy. It is especially useful if the baseplate sinks deep into the ground during prolonged firing. f. Ammunition should be stored under cover. Proximity-fuzed short cartridges, which are duds, contain a complete explosive train and impact element. The gunner can depress the barrel, if necessary, to provide easier access to the firing pin. All mortar cartridges are painted to prevent rust and to identify their type. At the command, MARCH ORDER, the squad places the mortar, equipment, and ammunition in the squad vehicle and trailer. c. Authorized Cartridges. 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 firing pin must be replaced and the bore swabbed. The 81-mm mortar, M252, is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. a. This round may be stored in a horizontal position. The cartridges are returned to their original containers. Tabular Firing Tables TFT ORDER FORM 1.Select "Mortar" 2.Select which mortar caliber 3.Select mortar system nomenclature 4.Select which TFTs to order 5.Put in quantity and click "Add TFTs" 6.Click "Next" TFT JUSTIFICATION 1.Put in TFT Ordering Justification 2.Click "Next" SHIPPING INFORMATION 1.Fill out all required fields This ensures that the mortar does not fire should the round slip down the barrel during the subsequent drills. While the assistant gunner supports the barrel, the gunner slackens the leg-locking handwheel, releases the locating catch, and positions the plain leg. The M751 fuze is the only dummy fuze used with the 81-mm mortar. SQUAD AND SECTION ORGANIZATION AND DUTIES, Each member of the infantry mortar squad has principle duties and responsibilities. Examples are: The table on the right describes the three most common setups. He exposes 1 inch (25 millimeters) of cross-level shaft and folds the handle. He has the duty of preparing the ammunition and passing it to the assistant gunner. Figure 4-7. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. When fired, the cartridge carries the ignition cartridge with it, leaving the mortar ready for the next cartridge. High explosive--M821, M889, M374-series, and M362. If the primer is not dented, the round may be used again. Red phosphorus/white phosphorus--M819 and M375-series. c. The moisture-resistant seal of the container is broken when the ammunition is to be used. The M532 fuze is a radio doppler fuze that has a proximity (PROX) or SQ/IMP function. 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. The assistant gunner checks the bipod and ensures that--. 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. Excess increments should not accumulate near the mortar positions but are removed to a designated place of burning and destroyed. To dismount the mortar, the squad leader commands, OUT OF ACTION. Normally, it can be moved by hand, although this may be difficult to do if the mortar is moved through a large arc. (6) The primer cartridge is checked for damage or dampness. Section I. .50: BROWNING, M2 (HEAVY BARREL, FLEXIBLE) ON MOUNT, MACHINE GUN, TRIPOD MTD, CAL. He exposes 4 inches (100 millimeters) of elevation shaft and folds the handle. c. The M375A2, M375A1, and M375 cartridges may also be used. The fuze arms and functions normally when fired at any angle of elevation between 0800 and 1406 mils at charges 1 through 9. To prepare for firing, the slot is aligned in the striker with SQ or delay using the M18 fuze wrench. Referring and realigning aiming posts ensure that all mortars are set on the same data. Red phosphorus rounds can be fired from the M29/M29A1 at a reduced charge (maximum charge = charge 2). 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. MORTAR RANGE: 500M X 100M X: FIELD TRAINING AREA 40000 Sq Ft: X STORAGE BUILDING, GENERAL PURPOSE, INSTALLATION: Area to store excess equipment X: ORGANIZATIONAL STORAGE BUILDING Arms room for Mortar equipment: X . 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. The M734 multioption fuze is the only one used with the 81-mm mortar. The components of the mortar consist of a cannon, mount, and baseplate. The cartridge is painted olive drab with yellow markings. He stands to the rear of the baseplate and supports the barrel until the bipod is fitted. M3A1 Baseplate Bear in mind that these are my personal opinions, experiences, and . a. As soon as the sight data are announced, the gunner places it on the sight. Training practice is used only for training. An 81 mm mortar is a medium-weight mortar. 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 platoon leader commands the platoon and supervises the training of the elements. The American M1 81mm Mortar, like the upcoming M2 60mm Mortar, was based on a French design by Edgar William Brandt (1880-1960). The gunner is given a deflection change between 5 and 25 mils, either increasing or decreasing from the last stated deflection, and the command to refer and realign aiming posts. (e) If the mask is not regular throughout the sector of fire, the gunner determines the minimum mask clearance as described above. Additional information is included on an ammunition data card inside each container. a. Fort Belvoir, VA 22060 It has four function settings: PRX (proximity) causes the cartridge to explode between 3 and 13 feet above the ground; NSB (near-surface burst) causes the cartridge to explode up to 3 feet above the ground; IM (impact) causes the cartridge to explode on contact; and DLY (delay) incorporates a 0.05-second delay in the fuze train before exploding the cartridge. With the clamps facing away from him, the assistant gunner traverses the buffer carrier to the traversing handwheel and folds the handle. The cartridge is painted olive drab with yellow markings and weighs about 9.05 pounds. He moves the mortar until the vertical line of the sight is aligned approximately on the aiming post. The ignition cartridge (with primer) is fitted into the base of the fin shaft. The fuze consists of a brass head, body assembly, and expelling charge. (1) Marking on container. Range Minimum to maximum 83 to 5,608 meters Rate of Fire . The fuze consists of a brass head, body assembly, and expelling charge. REFERRING OF THE SIGHT AND REALIGNMENT OF AIMING POSTS USING M64 SIGHT. The M821A2/821A1/889A1 consists of the following major components: M935 Point Detonating Fuze or M734/734A1 Multi-Option Fuze. Additionally, they carry the 81mm M252 mortar that can only be used in a dismounted capacity. 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). The safety pull wire is removed just before inserting the cartridge into the mortar. The M853 cartridge (M252 only) has a cylindrical body that contains an illuminating candle and parachute assembly. The ignition cartridge has a percussion primer and is assembled to the end of the fin assembly. (4) The blast attentuator device is secured correctly. An air cavity can form on one side of a cartridge to unbalance it, causing instability in flight. When targets are beyond such irregularities, a clearance of at least 30 meters should be allowed to ensure maximum effect over the target area. When set at delay, the fuze train causes a 0.05-second delay before functioning. The fuze is set manually to proximity, point detonate, or delay modes. He uses the chain of command to assist him in effecting his command and supervising duties. The standard infantry support weapon is the M-252 81mm mortar, which lobs a 10 lb. 4-10. It is fitted with a safety wire and pin that are removed immediately before firing. Mount, M177, in folded position. Increments removed from cartridges before firing should be placed in a metal or wooden container located outside the firing vehicle/position at least 25 meters away. 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. The round is still safe to handle and transport if the safety wire is reinserted. 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. Both the M90 and M90A1 propellants are in nine wax-tested, cotton cloth, bag increments assembled to the tail unit. [1] [2] Many countries use or used an 81 mm mortar in their armed forces. Then he relocks the barrel clamp. This section discusses the. High explosive is used for both fragmentation and blast effect against personnel and light-skinned vehicles. In addition to supervising the emplacement, laying, and firing of the mortar, he supervises all other squad activities. 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 . If the round does not fire, the gunner tests the barrel for heat. Fuzes are not disassembled. The gunner is given an administrative command to lay the mortar on a deflection of 2860 or 2740 mils. The fuzes may be used for day or night operations. a. General Dynamics Ordnance and Tactical Systems' 81mm Roll Controlled Guided Mortar (RCGM) provides an affordable, flexible solution to meet that need. He places firing data on the sight and lays the mortar for deflection and elevation. End this starting train with not less than 1 meter of inert material (dry grass, leaves, or newspapers). The propelling charge is contained in four horseshoe-shaped, felt-fiber containers or nine wax-tested, cotton cloth, bag increments. (5) Four inches of elevation shaft are exposed, and the shaft is not bent. The gunner stands to the left side of the mortar where he can manipulate the sight, elevating handwheel, and traversing handwheel. The fuze is nicely marked and is dated 1940. The aluminum tail assembly has six integral fins equally spaced around the rear, which stabilize the round in flight. At this command, the squad proceeds as follows: a. If not, the cartridge is placed on its side, and the closing plug is removed using an M18 fuze wrench. The obturating ring ensures equal muzzle velocities in hot or cold barrels by keeping all the gases in the barrel until the cartridge has fired. As a longstanding partner of armed forces around the globe, Rheinmetall supplies a wide array of mortar systems and ammunition. There must not be a visible gap between the fuze and cartridge body. It should be destroyed in accordance with standard procedures. 0.30, BROWNING, M1919A4, M1919A5 AND M1919A6 {TO 39A-5 AF-32} (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, MACHINE, CAL. During training, the gunner may use the driving stake from the aiming post case. The 81-mm mortar, M252, is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. All elements given in the fire command are repeated by the squad. The 60mm mortar section is located in the weapons platoon of the rifle company, is armed with three 60mm mortars, and is Complete cartridges are always handled with care. The fuze is screwed into the cartridge body, and it is seated and secured using an M18 wrench. He performs other duties as the squad leader directs. Before the mortar is mounted, the squad must perform premount checks. The 81mm weapons platoon consisted of the headquarters platoon and four mortar squads. The sight bracket is attached to the buffer carrier, which is fitted to the traversing screw assembly. Agreed that mortars should generally be used close to the frontline. Once set to act as an impact fuze, the mechanism cannot be reset for PROX. 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. The fuze body is graduated from 0 to 50 seconds in 2-second intervals; 10-second intervals are indicated by bosses. Table 4-2. Figure 4-8. Cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the U.S. Marine Corps and U.S. Navy only. (d) Firing is slowed if mask clearance must be checked before each firing but this can be eliminated if minimum mask clearance is determined. The principal factors affecting height of burst are the angle of approach to the target and the reflectivity of the target terrain. c. The elevating shaft is contained in the elevating leg; to the left of the elevating leg is the elevating handwheel. The mortar is within two turns of center of traverse. It is fitted with a standard pull wire and safety pin that are removed immediately before firing. . HE Guided Mortar is in development. Placing the mortar in position at night does not relieve the gunner of the responsibility of checking for mask clearance and overhead interference. ), 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). The 81mm mortar is a portable, mobile, medium mortar at the infantry's disposal. Army Publishing Directorate d. The gunner recovers the baseplate to the area designated by the squad leader. System (including basic issue items) Upon completion of any bipod movement on the barrel, the gunner ensures that the firing pin recess is facing upward. A .mil website belongs to an official government organization in the United States. ), 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.