TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 539 of 775

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.