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 5-8 Change 4 Table 5-1. 155MM AMMUNITION FOR M109 HOWITZERS - CONTINUED Authorized Projectiles Classification Identification Fuzes Remarks M483A1, HE, DP, ICM NOTE • The M483A1 projectile may be fired with or without an obturating band. If the obturating band is broken, remove and discard it. If it is dislodged, remove or reposition it. • The M483A1 projectile consists of a steel body with aluminum base and ogive containing an expelling charge and 88 shaped–charge grenades. • The M483A1 projectile can be used in the fire–for–effect mode or the registration mode. • In the fire–for–effect mode, the expelling charge ejects the 88 grenades from the projectile during flight and they actuate on ground or target impact. A shaped charged jet it expelled downward while the body bursts into a large number of high velocity fragments. • The jet is capable of penetrating approximately 2.75 inches (6.99 cm) of homogeneous armor plate. Antipersonnel effects are obtained by fragmentation of the body. • In the self–registration mode, the expelling charge is removed, a projectile spotting charge is attached to the time fuze and installed into the projectile. Functioning of the fuze detonates the entire projectile over the target, permitting observation of the projectile as it functions in relation to the target. The spotting charge will cause the projectile to detonate all 88 grenades inside the projectile, causing high fragmentation in the same manner as a standard high–explosive projectile. • The M483A1 projectile may be used for self–registration (as a spotting round) by replacing the expulsion charge assembly with a projectile spotting charge added to the M577 series or M762 series fuze.