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Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
Chapter 5 - Section 1 |
NAVY PROJECTILES |
20-mm Armor-Piercing Incendiary Projectile |
Fuze: None. |
Weight of projectile: 4.64 ounces. |
Length of projectile: 3.15 inches. |
Length of complete round: Mk I, 5.58 inches; Mk II, 6.76 inches. |
Filling: Incendiary mixture: |
1. Nitrocellulose: 77.5 percent. |
2. Sodium nitrate: 11.3 percent. |
3. Aluminum: 11.2 percent. |
Weight of filling: 0.12 ounces. |
Color and markings: White over-all. |
Remarks: This projectile is unfuzed and has a pointed steel body and a soft copper cap soldered to the nose. The incendiary filling loaded through the base is sealed with a threaded base plug. |
Upon impact, the rear end of the projectile ruptures and the heat generated ignites the incendiary filling. |
No modification or similar Swiss ammunition exist. |
Figure 354 – 20-mm Armor-Piercing Incendiary Projectile. |
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