Dual-Purpose Improved Conventional Munition
United States DPICM projectiles

Projectile
M483A1
M864
M915
M916
M444
Caliber
155 mm
155 mm
105 mm
105 mm
105 mm
Service date
1975
1987
1998 (?)
1998
1961 (production ended early 1990s)
Range
? to 17 km
? to 30 km
10 km to 14 km
3 km to 11 km
? to 11.5 km
Load
64 × M42 24 × M46
48 × M42 24 × M46
42 × M80
42 × M80
18 × M39 (M444E1 used M36)
Weight projectile (fuzed)
46.5 kg
47 kg (approx)
?
?
14.97 kg
Length (fuzed)
937 mm
899 mm
?
?
371.9 mm

Question: What are the caliber and load of the M864 projectile and when did it enter service?
Answer: The 155 mm M864 projectile entered service in 1987 and carries M42/M46 load.