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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 5 - Section 1 |
| NAVY PROJECTILES |
| 30-mm Ammunition |
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Two 30-mm aircraft cannon, the type 2 and the type 5, were in use by the Japanese. These guns are of Oerlikon design and use similar ammunition. The type 5 gun uses a lon-ger case and a slightly heavier projectile than the type 2 gun. |
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Case: The case for the type 2 gun is of typical Oerlikon design. It is a comparatively short brass reduced-rim case slightly necked. |
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The case for the type 5 gun is longer, has a more pronounced neck, and is of the rimless type. |
| Type 2 | Type 5 | ||
| Length of case | 3.58 inches | 4.81 inches. |
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Projectiles: Like the 20-mm ammunition, the type of projectile is indicated by painting the projectile body a solid color. However, some of the type 5 projectiles were unpainted except for a narrow band behind the nose fuze. |
| The following dimensions are common to all projectiles: |
| Type 2 | Type 5 | ||
| Diameter at bourrelet | 1.18 inches | 1.18 inches. | |
| Width of rotating band | 0.24 inch | 0.31 inch |
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Figure 363 – 30-mm Ammunition. |
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