The gunner then kicks the barrel several times with his heel in an attempt to dislodge the round. a. Point-Detonating. The gunner should expose 6 inches (150 millimeters) of elevation shaft and center the buffer carrier. They function normally in light rain; however, heavy rain, sleet, or snow can cause an increase in the number of early bursts. (1) The M772A1 fuze is a MTSQ. REFERRING OF THE SIGHT AND REALIGNMENT OF AIMING POSTS USING M64 SIGHT. Weights (pounds) System (including basic issue items) Barrel (with blast attenuator device) Mount M3A1 Baseplate If not, he may still fire at the desired range by selecting a charge zone having a higher elevation. If it is necessary to leave the ammunition uncovered, it should be raised on dunnage at least 6 inches above the ground. 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. The baseplate (Figure 4-5) is of one-piece construction, and supports and aligns the mortar for firing. e. The second ammunition bearer stands to the right rear of the mortar behind the ammunition bearer. 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 M252 system . The squad leader stands behind the mortar where he can command and control his squad. 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 M252 is highly accurate up to ranges of 4500m to 5700m depending on the . If the primer is not dented, the round may be used again. (3) Markings on rounds. b. An internal clock mechanism provides nine seconds of safe air travel (610 to 2,340 meters along trajectory for charge 0 through 9, respectively). The ammunition that can be fired by the 81-mm mortar, M252, is identified and described herein. When firing under the control of an FDC, he reports to the FDC that mask clearance cannot be obtained at a certain elevation. From introduction up to halfway World War 2 the ML 3-inch had a poor range of up to 1.45 km. LARGE DEFLECTION AND ELEVATION CHANGES. An ammunition lot number is assigned to each ammunition lot, which is marked on each cartridge and packing container. Ammunition Lot Number. Cartridges assembled with the M532 fuze must be fired above charge 0. b. 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. Section I. If the round fires, the mortar is re-laid on the aiming point and firing is continued. An air cavity can form on one side of a cartridge to unbalance it, causing instability in flight. e. The pull wire and safety wire are removed from the fuze just before firing. HE Guided Mortar is in development. The lower clamp is shaped and bored on each side to house the buffer cylinders. The first table is a chart that shows range and elevation for firing particular mortar shells. The aluminum tail assembly has six integral fins equally spaced around the rear, which stabilize the round in flight. Attached to the right of the screw is the traversing handwheel. e. The assistant gunner passes the round to the first ammunition bearer who inspects it for the cause of the misfire. Additionally, they carry the 81mm M252 mortar that can only be used in a dismounted capacity. The cartridge uses the M205 propelling charge and is assembled with the M567 or M524-series fuze. a. e. The squad leader picks up the aiming posts and sight. The sight bracket is attached to the buffer carrier, which is fitted to the traversing screw assembly. LHMBC. The cannon has a crew-removable breech plug and firing pin. In any case, the gunner must ensure that the cartridge does not strike an obstacle. The bipod provides front support for the barrel and carries the gears necessary to lay the mortar. The removable increments are fitted onto or around the shaft, depending on their type. d. The gunner rough levels the cross-level bubble by making the bubble bounce from one side to the other. It can be fitted with either the M567, M524, or M532-series fuzes. When a large number of cartridges are needed for a mission, they may be removed from the containers and prepared. The propellant train (except the training cartridge) consists of an ignition cartridge and propellant charges. 251 MK 1 AND CARTRIDGE, AP-T, M81 AND M81A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 57-MM, M18, M18A1 AND T15E16; FIRING CARTRIDGE, HE, M306A1 AND CARTRIDGE, TP, M306A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 57-MM, M18, M18A1 AND T15E16, FIRING CARTRIDGE, HE, AT, M307A1, MUZZLE/VELOCITY, 1200 F/S (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60MM, M224 FIRING CARTRIDGE, HE, M720 CARTRIDGE, HE, M720A1 CARTRIDGE, HE, M49A4 CARTRIDGE, HE, M888 CARTRIDGE, HE, M768 CARTRIDGE, HE, XM1046 CARTRIDGE, HE, M1061 CARTRIDGE, WP, M50A3 CARTRIDGE, WP, M302A2 AND M302A1 CARTRIDGE, WP, M722 CARTRIDGE, WP, M722A1 CARTRIDGE, ILLUM, M83A3 CARTRIDGE, ILLUM, M721 CARTRIDGE, IR, M767 CARTRIDGE, FRPC, M769 CARTRIDGE, TP (SR), M766 (S&I BY PROP SEE DETAILS, FOOTNOTES) (REPRINTED W/BASIC INCL C1), FIRING TABLES FOR MORTAR, 60MM: M224 MORTAR, 60MM: M224A1 FIRING CARTRIDGE, HE, M720A1 CARTRIDGE, HE, M768 CARTRIDGE, HE, M720 CARTRIDGE, HE, M720A2 CARTRIDGE, HE, M768A1 CARTRIDGE, WP, M722 CARTRIDGE, WP, M722A1 CARTRIDGE, HE, M888 CARTRIDGE, HE, M49A4 CARTRIDGE, TP, M50A3 CARTRIDGE, HE, M1061 CARTRIDGE, HE, XM1046 CARTRIDGE, WP, M302A1 CARTRIDGE, WP, M302A2 CARTRIDGE, ILLUM, M721 CARTRIDGE, ILLUM, M83A3 CARTRIDGE, IR ILLUM, M767 CARTRIDGE, TP(SR), M766 CARTRIDGE, FRPC, M769 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60-MM, M224; FIRING CARTRIDGE, HE, M888 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60MM, M224, FIRING CARTRIDGE, HE, M888 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60 MM, M224 FIRING CARTRIDGE, HE M488 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE: 75-MM, M20 (T25); FIRING CARTRIDGE, PHE, M310 AND M310A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 76-MM, M32 ON TANKS, 75-MM GUN, M41 AND M41A1 AND GUN, 76-MM, M48 (T124E2) ON CARRIAGE, 76-MM, M29 (T66) FIRING SHOT, AP-T, M339 SHOT, TP-T, M340 SHOT, HVAPDS-T, M331A1 AND M331A2 SHOT, HVAP, T66E4 SHELL, HE, M352 SHELL, WP, M361 (T140E2) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1, M29 AND M1; FIRING CARTRIDGE, HE, M362 CARTRIDGE, HE, M43A1 AND TP, M43A1 CARTRIDGE, WP, M57 AND M57A1 CARTRIDGE, ILLUMINATING, M301A1 AND M301A2 CARTRIDGE, ILLUMINATING, M301A3 (REPRINTED W/BASIC INCL C1-7) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR 81-MM: M29 AND M2 FIRING CARTRIDGE, HE, M43A1 WITH FUZE, PD, M525 FUZE, PD, M52A2E3 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR: 81-MM, M29 AND M1 ON MOUNTS, MORTAR: 81-MM, M23A2, M23A1, M23, M4 AND M1; FIRING SHELL, HE: M43A1 AND M43A1B1; SHELL, TP: M43A1 AND M43A1B1 WITH FUZE, PD: M52B10; FIN, M3; CARTRIDGE, IGNITION: M8; PRIMER, PERCUSSION: M34 AND INCREMENT, PROPELLANT: M1A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; MORTAR, 81-MM, SELF-PROPELLED: M125A1 AND M125; CARRIER, 81-MM MORTAR: TRACKED, XM755; FIRING CARTRIDGE, HE: M374A2 AND M374; CARTRIDGE, WP, M375A2 AND M375; CARTRIDGE, ILLUMINATING: M301A3; CARTRIDGE, TRAINING: M68 AND TRAINING DEVICE, M1 (REPRINTED W/BASIC INCL C1-4) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; FIRING CARTRIDGE, HE, M374A2 AND M374; CARTRIDGE, WP, M375A2 AND M375 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 81MM, M29 AND M1 FIRING CARTRIDGE, ILLUMINATING, M301A3 WITH FUZE, TIME, M84A1, HEIGHT OF BURST, 600 METERS (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM, M29A1 AND M1; FIRING CARTRIDGE, ILLUMINATING, M301A2 WITH FUZE, TIME: M84A1 HEIGHT OF BURST, 381 METERS (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; FIRING TRAINING DEVICE, 81-MM: M1 SABOT WITH CARTRIDGE, TP, M744 (CHARGE 1); CARTRIDGE, TP, M745 (CHARGE 2); CARTRIDGE, TP, M746 (CHARGE 3), CARTRIDGE, TP, M747 (CHARGE 4) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29 AND FIRING CARTRIDGE, HE: M374A3 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE FOR MORTAR, 81-MM: M29A1 AND M29; MORTAR, 81-MM, SELF-PROPELLED: M125A1 AND M125; CARRIER, 81-MM MORTAR: TRACKED, M755 M755 AND FIRING CARTRIDGE, HE, M374A3 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 81MM, M252, M252A1, AND M252A2 FIRING CARTRIDGE, HE, M821; CARTRIDGE, HE M889; CARTRIDGE, RP, M819; CARTRIDGE, ILLUMINATING, M853A1; CARTRIDGE, TP, M879; CARTRIDGE, TP, M879A1; CARTRIDGE, HE, M821A1; CARTRIDGE, HE, M821A2; CARTRIDGE, HE, M821A3; CARTRIDGE, HE, M821A4; CARTRIDGE, HE, M889A1; CARTRIDGE, HE, M889A2; CARTRIDGE, HE, M889A3 (PROV); CARTRIDGE, HE, M889A4; AND CARTRIDGE, IR ILLUMINATING, M816; AND MORTAR, 81MM, M29A1 AND MORTAR, 81MM, M252, M252A1, AND M252A2 FIRING CARTRIDGE, TP (SR), M880 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM, M29A1, M29, AND M1; FIRING CARTRIDGE, TRAINING, M68 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 90-MM: M67 AND FIRING CARTRIDGE, HEAT, M371 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 105MM GUN, M68 AND M68A1 ON TANK, COMBAT, FULL TRACKED: 105MM GUN, M1, M60A3, M60A1, M60 AND M48A5; FIRING CARTRIDGE, APFSDS-T, M900; CARTRIDGE, APFSDS-T, M833; CARTRIDGE, APFSDS-T, M774; CARTRIDGE, APFSDS-T, M735; CARTRIDGE, APDST, M728; CARTRIDGE, APDST-T, M392A2, M392A1, AND L36A1; CARTRIDGE, HEAT-T-MP, M456A2; CARTRIDGE, HEAT-T, M456A1 AND M456; CARTRIDGE, HEP-T, M393A2 AND TP-T, M393A1; CARTRIDGE, WP-T, M416; CARTRIDGE, APERS-T, M494; CARTRIDGE, TPDS-T, M724; CARTRIDGE, TP-T, M490A1; CARTRIDGE, TP-T, M490 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-H-6 FOR CARTRIDGE, HE, M444 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-AS-2 FOR CARTRIDGE, HE, M444 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-AS-4 FOR CARTRIDGE, HE, DPICM, M915 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137A1 (M137E1) AND M137 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1 FIRING CARTRIDGE, HE, M1 CARTRIDGE, GAS, PERSISTENT, H AND HD, M60 CARTRIDGE, GAS, NONPERSISTENT, GB, M360 CARTRIDGE, SMOKE, WP, M60, M60A1 AND M60A2 CARTRIDGE, SMOKE, HC AND COLORED, BE, M84A1 CARTRIDGE, ILLUMINATING, M314A3 CARTRIDGE, HEP-T, M327 CARTRIDGE, ANTIPERSONNEL, M546 CARTRIDGE, HEAT-T, M622 CARTRIDGE, HE, M760 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137 AND M137A1 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING CARTRIDGE, HERA, M548 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1 FIRING CARTRIDGE, HERA, M913 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137 AND M137A1 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING CARTRIDGE, HERA, M927 (S&I BY PROP SEE DETAILS, FOOTNOTES)-, CANNON, 105-MM HOWITZER: M2A2 AND M2A1 ON HOWITZER, LIGHT, TOWED: 105-MM, M101A1 AND M101 AND CANNON, 105-MM HOWITZER: M49 ON HOWITZER, LIGHT, SELF-PROPELLED, FULL-TRACKED, 105-MM: M52A1 AND M52; FIRING CARTRIDGE, HE: M1; CARTRIDGE, GAS PERSISTENT, H AND HD, M60; CARTRIDGE, GAS, NONPERSISTENT, GB, M360; CARTRIDGE, SMOKE, WP, M60; CARTRIDGE, SMOKE, BE, M84 AND M84B1 (HC AND COLORED); CARTRIDGE,SMOKE, HC, BE, M84A1 (M84E1); CARTRIDGE, ILLUMINATING, M314A3 (M314A2E1); CARTRIDGE, HEP-T, M327; CARTRIDGE, ANTIPERSONNEL, XM546 AND CARTRIDGE, HEAT-T, M622 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, RECOILLESS, 106MM, M40, FIRING, SHELL, HEAT, M344 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 106-MM RECOILLESS RIFLE, M40A1 ON MOUNT, M79; FIRING CARTRIDGE, 106-MM: HEAT, M344 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 106-MM, M40 FIRING CARTRIDGE, HEP-T, M346 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 106-MM RECOILLESS RIFLE, M40A4 AND M40A2 ON MOUNT, M79; FIRING CARTRIDGE, ANTIPERSONNEL, XM581 WITH FUZE, MT, XM592E1 AND CARTRIDGE, ANTIPERSONNEL, M581 WITH FUZE, MT, M592 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 120MM GUN, M256 ON TANK, COMBAT, FULL TRACKED: 120MM GUN, M1A1 FIRING CARTRIDGE, APFSDS-T, M829 CARTRIDGE, APFSDS-T, M829A1 CARTRIDGE, APFSDS-T, M829A2 CARTRIDGE, APFSDS-T, M827 CARTRIDGE, APFSDS-T, DM13 CARTRIDGE, HEAT-MP-T, M830 CARTRIDGE, HEAT-MP-T, M830A1 CARTRIDGE, HEAT-MP-T, DM12 CARTRIDGE, TPCSDS-T, M865 CARTRIDGE, TPCSDS-T, M865 PIP CARTRIDGE, TPFSDS-T, M866 CARTRIDGE, TPFSDS-T, DM28 CARTRIDGE, HEAT-TP-T, M831 CARTRIDGE, TP-T, M831A1 CARTRIDGE, HEAT-TP-T, DM18 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: CARRIER-MOUNTED M121 MARTAR, 120MM: TOWED M120 FIRING CARTRIDGE, HE, M934 CARTRIDGE, HE, M934A1 CARTRIDGE, HE, M933 CARTRIDGE, WP, XM929 CARTRIDGE, WP, M929 CARTRIDGE, ILLUM, XM930 CARTRIDGE, IR ILLUM, XM983 CARTRIDGE, FRPC, M931 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: CARRIER-MOUNTED RMS6L (BCT STRYKER) FIRING CARTRIDGE, HE, M934 CARTRIDGE, HE, M933 CARTRIDGE, HE, M934A1 CARTRIDGE, WP, XM929 CARTRIDGE, WP, M929 CARTRIDGE, ILLUM, M930 CARTRIDGE, ILLUM, M930E1 CARTRIDGE, IR ILLUM, M983 CARTRIDGE, FRPC, M931 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: TOWED M327 FIRING PROJECTILES, HE, M1101 PROJECTILES, SMOKE, WP, M1103 PROJECTILES, ILLUMINATING, M1105 PROJECTILES, PRACTICE, M1107 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 152-MM GUN LAUNCHER: M81E1 AND M81 ON ARMORED RECONNAISSANCE/AIRBORNE ASSAULT VEHICLE: FULL TRACKED, 152-MM, M551; FIRING CARTRIDGE, 152-MM: HEAT-MPT, XM409E5; CARTRIDGE, 152-MM: TP-T, XM411E4 AND XM411E3; CARTRIDGE, 152-MM: HE-T, XM657E2; CARTRIDGE, 152-MM: CANISTER, XM625 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 152-MM GUN-LAUNCHER: M162 ON TANK, COMBAT, FULL-TRACKED: 152-MM, M60A2; FIRING CARTRIDGE, 152-MM: HEAT-T-MP, M409; CARTRIDGES, 152-MM: TP-T, M411A1 AND M411 AND CARTRIDGE, 152-MM CANISTER, M625 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AR-2 FOR PROJECTILE, SMOKE, M825 AND PROJECTILE, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, HE, M449A1 (M449E2) PROJECTILES, HE, M449 (T379) PROJECTILES, HE, M449E1 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 144-ADD-K-1 FOR HOWITZER, ORGANIZATIONAL, MEDIUM, SELF-PROPELLED, 155-MM, M109, M109A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, HE, M692 AND PROJECTILE, HE, M731 (REPRINTED W/BASIC INCL C1-2) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, HE, M692 PROJECTILES, HE, M731 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, HE, M692; PROJECTILE, HE, M731 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, ANTITANK, M718 AND M741 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, ANTITANK, M718 AND M718A1 PROJECTILES, ANTITANK, M741 AND M741A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, ANTITANK, M718 AND M741 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, SMOKE, M825 AND PROJECTILES, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILE, HE, M483A1 USING REGISTRATION DATA FOR PROJECTILE, HE, M107 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, HE, M483A1 USING REGISTRATION DATA FOR PROJECTILES, HE, M107 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AM-3 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, SMOKE, M825 AND PROJECTILES, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AM-3 FOR PROJECTILE, SMOKE, M825 AND PROJECTILE, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA ADDENDUM TO FT 155-ADD-AU-PAD FOR PROJECTILE, HE, M864 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 155-MM HOWITZER, M126A1 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155-MM, M109 AND CANNON, 150MM HOWITZER, M1A2 ON HOWITZER, MEDIUM, TOWED, 150MM, M114A2 FIRING PROJECTILE, HE, M483A1 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 AND CANNON, 155MM, HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 FIRING PROJECTILE, HE, M107 PROJECTILE, SMOKE, WP, M110, PROJECTILE, SMOKE, BE, M116, M116B1 (HC AND COLORED) PROJECTILE, SMOKE, BE, M116A1, (HC) PROJECTILE, GAS, PERSISTENT, H AND HD, M110 PROJECTILE, GAS, NONPERSISTENT, GB, M121A1 PROJECTILE, GAS PERSISTENT, VX, M121A1 PROJECTILE, ILLUMINATING, M485A2 AND M485A1 (REPRINTED W/BASIC INCL C1) (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, HE, M107; PROJECTILE, SMOKE, WP, M110, M110A1 AND M110A2; PROJECTILE, SMOKE, BE, M116A1 (HC); PROJECTILE, ILLUMINATING, M485A2 AND M485A1; AND PROJECTILE, IR ILLUMINATING, M1066 (S&I BY PROPONENT, SEE FOOTNOTES. The gunner checks the baseplate and ensures that--. Ammunition is made and packed to withstand all conditions ordinarily encountered in the field. He moves the mortar until the vertical line of the sight is aligned approximately on the aiming post. b. The M375A3 cartridge is ballistically similar to the M374A3 (HE) cartridge. News. Notches in the setter engage ribs in the setting ring of the fuze. c. The assistant gunner disengages the barrel clamps and moves the bipod from the immediate area of the mortar position. Swifty 3 from scratch; Swifty 3 split-repo setup; Swifty Troubleshooting; Mods. 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. It is painted white with black markings. Red phosphorus/white phosphorus--M819 and M375-series. WP cartridges are stored with the fuze end up. Red phosphorus rounds can be fired from the M29/M29A1 at a reduced charge (maximum charge = charge 2). c. Crest Clearance. 0.50, BROWNING, M2; FIRING CARTRIDGE, ARMOR-PIERCING-INCENDIARY, CAL. This section discusses the. The M853 and M301A3 illuminating ammunition are described herein. He may assist the gunner in shifting the mortar when the gunner is making large deflection changes. He indicates the initial direction of fire by pointing in that direction and commands ACTION. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and norm ally utilizes a FDC. To dismount the mortar, the squad leader commands, OUT OF ACTION. b. 81-mm MORTAR, M252 The 81-mm mortar, M252, delivers timely, accurate fires to meet the . The components of the mortar consist of a cannon, mount, and baseplate. The gunner is given a deflection change in a fire command between 20 and 60 mils inclusive. The mortar is mounted and the sight is installed. c. The first ammunition bearer ensures that each cartridge is clean, the safety pin is present, and the ignition cartridge is in good condition. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and normally utilizes a FDC. The M821A2/821A1/889A1 consists of the following major components: M935 Point Detonating Fuze or M734/734A1 Multi-Option Fuze. That is generally how I use mortars. Identification. Upon completion of any bipod movement on the barrel, the gunner ensures that the firing pin recess is facing upward. a. The M751 is fitted with a smoke charge that operates on impact. To prepare for firing, the slot is aligned in the striker with SQ or delay using the M18 fuze wrench. 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.] This may preclude moving the bipod. d. The ammunition is protected from mud, sand, dirt, and water. If the round does not fire, the gunner tests the barrel for heat. Proximity-fuzed short cartridges, which are duds, contain a complete explosive train and impact element. SMALL DEFLECTION AND ELEVATION CHANGES. d. The gunner recovers the baseplate to the area designated by the squad leader. 60mm, 81mm, and 120mmMortar Increments. He opens the cross-level handwheel, traversing handwheel, and barrel clamp. 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. Since phosphorus liquefies at about 100 degrees Fahrenheit, the ammunition is protected against an uneven rehardening of the filler. At the muzzle end is a cone-shaped blast attenuator device (BAD) that is fitted to reduce noise. c. The M375A2, M375A1, and M375 cartridges may also be used. During training, the gunner may use the driving stake from the aiming post case. 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. Any target that requires that elevation, or a lower one, cannot be engaged from that position. Fuzes are not disassembled. Excess increments should not accumulate near the mortar positions but are removed to a designated place of burning and destroyed. He then checks the sight picture to ensure he is within 20 mils of a proper sight picture. The fuze threads and fuze well threads are inspected for damage. a. The gunner places the announced deflection on the sight (without disturbing the lay of the weapon) and looks through the sightunit. FT 81-AI-3 Firing Tables Mortar, 81mm: M28A1 and M29 Mortar 81mm Self propelled M125A1 and M125 Carrier, 81mm Mortar Tracked XM755 MFCS Mounted. The elevation change announced must be less than 90 mils and more than 35 mils. Firing tables are used to determine the correct charge for firing. It has two types: type 1 resembles the M734 fuze, and type 2 resembles the M935 fuze. The 81-mm mortar, M252, is a smooth-bore, muzzle-loaded, high-angle-of-fire weapon. M64A1 Sightunit. How the RCGM works: Target coordinates are programed into the RCGM using a portable GPS setter. The body is made of aluminum and brass. e. Dummy. .30, BROWNING, M1919A4 AND M2 (HEAVY BARREL), .30, M2 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, MACHINE: CAL. Overhead interference can be branches of trees or roofs of buildings. They contain about 2.10 pounds of composition B explosive. 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 barrel clamps are then closed. 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. b. M224A1 60 MM LWCMS Mortar The 60mm mortar, M224A1 Lightweight Company Mortar System (LWCMS), is a smoothbore, muzzle loaded, high angle of fire weapon. Home; Swifty. 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 propelling charge consists of an ignition cartridge and removable propellant increments. d. Multioption. They should not be approached for 5 minutes or disturbed for at least 30 minutes after firing. 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 M751 fuze is the only dummy fuze used with the 81-mm mortar. It uses the M219 propelling charge and weighs about 9.1 pounds. Developed by Hirtenberger Defence Systems (HDS), the rugged and reliable M8 comprises an 81 mm long-range weapon available in different barrel lengths, an entire range of ammunition, auxiliary field equipment, sighting systems and a fully digital fire-control system containing all ballistic data. (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. ), 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. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. (4) The blast attentuator device is secured correctly. 4-11. c. The assistant gunner stands to the right of the mortar, facing the barrel and ready to load. The vertical cross line of the sight is on the left edge of the aiming point. b. 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. This is the inert PD fuze type "IR-81" used by the Italians for their 81mm mortar rounds during WWII. He places the sight case and aiming posts to the left front of the mortar position. A locked padlock The round is still safe to handle and transport if the safety wire is reinserted. TM - Technical Manuals (Range 9) TM - Technical Manuals (Range 10) TM - Technical Manuals (Range 11-4) TM - Technical Manuals (Range 11-5) .
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