TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 5-15 Table 5-1. 155MM AMMUNITION FOR M109 HOWITZERS - CONTINUED Authorized Projectiles Classification Identification Fuzes Remarks M110, M110E1, M110A1 (M110E2), M110A2 (M110E3) WARNING • The filler in white phosphorus (WP) smoke projectiles melts at 111.4° F (44.1° C) and creates voids inside the projectile. The WP projectile must be stored base down so that any voids are in the nose of the projectile. Do not fire WP projectiles which are known to have been stored in other than base down position. Firing of such projectiles could contribute to inbore explosions or close-in premature malfunctions. • Since the burster in the M110 and M110E1 projectiles is loaded with tetrytol, do not store or fire at temperature exceeding 125° F (52° C). Temperatures above 125° F (52° C) will cause the tetrytol to melt and/or seep, causing premature functioning. Prior to firing, inspect fuze well cup for dents in bottom surface. If dents are found and/or fuze is hard to seat, do not use round. NOTE • The M110 and M110E1 projectiles are similar to the M110 gas projectile and have the same ballistic characteristics as the M107 HE projectile. • The M110A1 (M110E2) and M110A2 (M110E3) projectiles are similar to the M110 and M110E1 projectiles except that the burster is loaded with composition B5. • The M110A1 (M110E2) and M110A2 (M110E3) projectiles may be stored and transported at temperatures up to 145° F (63° C). Inspection of the fuze well cup is required before firing.