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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 4 – Section 1 |
| ARMY PROJECTILES |
| 12.7-mm Aircraft Cannon Ammunition |
A.P.T. |
A.P. (Italian) |
H.E.I. (Italian) |
H.E.I. |
H.E.I. (Italian) |
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Over-all length |
(inches) |
4 7/32 |
4 1/2 |
4 7/32 |
4 5/32 |
4 5/32 |
Length of case |
(inches) |
3 3/16 |
3 3/16 |
3 3/16 |
3 3/16 |
3 3/16 |
Lenght of projectile |
(inches) |
1 3/4 |
2 15/64 |
2 |
1 7/8 |
2 |
Weight of projectile |
(ounches) |
1.25 |
1.35 |
1.35 |
1.21 |
1.16 |
| Construction: |
|
Type |
Projectile Jacket |
Projectile Core |
|
Ball |
CuNi |
Lead. |
|
A.P.T. |
Brass |
Steel. |
|
H.E.I. (fuzed Japanese) |
Brass |
P.E.T.N. incendiary and steel. |
|
H.E.I. (fuzed Italian) |
Brass |
P.E.T.N. incendiary and steel. |
|
H.E.I. (fuzeless) |
Brass |
P.E.T.N. incendiary and steel. |
|
Tracer |
CuNi |
Steel. |
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A.P. (Italian) |
Gilding metal |
Lead tip, steel core. |
| Weapons in which used: HO 103 A.C.M.G. |
| Color and markings: |
| Type | Bands |
| Ball | Red. |
| A.P.T. | Black or green and white. |
| H.E.I. fuzed | White. |
| H.E.I. fuzeless | Purple. |
| H.E.I fuzed (Italian) | Red, blue, or green body. |
| Tracer | Green. |
| A.P. (Italian) | Black tip on nose. |
| Fuzing: Italian 12.7 mm. fuze or Japanese 12.7 mm fuze. |
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Remarks: This ammunition was copied by the Japanese from the Italians. Of the two H.E.I. fuzed rounds, one is Italian and the other is a Japanese copy of it. The Japanese H.E.I. fuzed differs from the Italian round in that the fuze used is of two-piece construc-tion instead of one. |
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This ammunition is packed in 10-round cartons and is reloaded into metal link belts for use. |
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Figure 207 – 12.7-mm Aircraft Cannon Ammunition. |
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