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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 4 – Section 1 |
| ARMY PROJECTILES |
| 12-cm (120-mm) Shrapnel Projectile |
| Weight of projectile, filled (without fuze): 19.88 kg. (43.75 pounds). |
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Ejecting charge: Black powder contained in the base of the projectile and in a central brass tube. |
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Shrapnel filling: 539 lead balls (12.5 grams each) packed in a rosin matrix. The balls are separated from the ejection charge by a steel disc which rests on a shoulder in the pro-jectile cavity. |
| Diameter at bourrelet: 119 mm (4 11/16 inches). |
| Length over-all (without fuze): 314.3 mm (12 3/8 inches). |
| Length protruding from case (without fuze): 293.1 mm (10 3/4 inches). |
| Width of rotating band: 9.5 mm (3/8 inch). |
| Fuzing: Type 88 35-second combination fuze. |
| Weapons in which used: Type 38 howitzer. |
| Case: |
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Length: 83 mm (3 1/4 inches). |
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Diameter of base: 128 mm (5 1/8 inches). |
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Weight: (empty): 3 pounds 4 3/4 ounces. |
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The brass case is straight sided and of the rimmed type. |
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Propellant: The propellant is in two increments, each encased in a silk bag with a small ignition charge sewed to the bottom of each bag. The first increment is nitrocellulose in 5/16 inch square flakes and the second increment is nitrocellulose in 1/16 inch square flakes. |
| Weight of propellant: |
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1st increment: 11 ounces. |
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2d increment: 6 3/8 ounces. |
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Figure 279 – 12-cm Shrapnel Projectile. |
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