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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 5 - Section 1 |
| NAVY PROJECTILES |
| 10-cm (100-mm) (3.9-Inch) Complete Round (Fixed) |
| Case: |
| Length: 32.25 inches. |
| Diameter of base: 6.81 inches. |
| Material: Brass. |
| Weight (empty): No data. |
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The case is crimped tightly into a groove in the base of the projectile by a single conti-nuous crimp. |
| Propellant: 20 DL2 (type 93 Mk 2 propellant): 12.7 pounds (5.740 kg.). |
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Documentary evidence and relationship to other known propellants indicates that this propellant is a double base powder in the form of flat strips. |
| Primer: Mk 2 case percussion primer, Model 4. |
| Weapon in which used: |
| Type 98 10-cm/50 dual-purpose gun. |
| Type 98 10-cm/65 dual-purpose gun, twin. |
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The latter is a modern gun, paired in a twin power-driven mount designed especially for antiaircraft aboard ships. It has been found ashore, unaltered in the characteristic gun-house mound used aboard ship. |
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Special features of this gun and mount are horizontally opposed sliding breech blocks, full power drive, and automatic fuze setting accomplished as the loading tray moves the round into position to be rammed. The arrangement for loading and fuze setting, and the general plan of the mount corresponds closely to that of the type 89 12.7-cm/40 twin mount. |
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Figure 380 – 10-cm Complete Round (Fixed). |
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