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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 5 - Section 1 |
| NAVY PROJECTILES |
| 13-mm Aircraft Machine Gun Ammunition |
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Tracer |
H.E.T. |
Incendiary |
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Over-all length |
4 1/8 inches |
4 1/8 inches |
4 1/8 inches. |
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Length of case |
2 1/2 inches |
2 1/2 inches |
2 1/2 inches. |
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Length of projectile (without fuze) |
1 37/64 inches |
1 37/64 inches |
1 37/64 inches. |
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Weight of projectile (empty) |
27.2 grams |
24.6 grams |
24.3 grams. |
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Type |
Projectile jacket |
Projectile core |
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Construction: |
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Ball |
Copper |
Lead. |
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A.P.T |
Copper |
Steel. |
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Tracer (dummy fuze plug) |
Copper |
Lead. |
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Incendiary |
Copper |
W.P. and lead. |
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H.E.T. (fuzed) |
Copper |
PETN and lead. |
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H.E. (fuzed) |
Copper |
PETN and lead. |
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Weapons in which used: Type 2 A.C.M.G. (copy of German 13-mm Rheinmetall-Borsig). |
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Type |
Body color |
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Color and markings: |
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| Ball | Black. |
| A.P.T. | White. |
| Tracer | Red. |
| Incendiary | Yellow. |
| H.E.T. | Red with brown band. |
| H.E. | Maroon (rust). |
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Remarks: This ammunition has a reduced-rim brass case with a shoulder above the ex-tractor groove. All rounds have a nose fuze or a dummy fuze plug. |
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The body of the projectiles are paited in distinctive colors after the system used in 20-mm aircraft cannon ammunition. |
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Figure 347 – 13-mm Aircraft Machine Gun Ammunition. |
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