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| HANDBOOK OF ENEMY AMMUNITION |
| PAMPHLET No. 5 |
| GERMAN SMALL ARMS AMMUNITION, GREANDES AND DEMOLITION CHARGES |
| GERMAN CARTRIDGES, S.A.A., 7.92-mm |
| 12. P.m.K. ARMOUR PIERCING/INCENDIARY (Fig. 5) |
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The envelope contains a lead tip, a hardened steel A.P. core which is tapered towards the rear 0.5 grains of yellow phosphorus and a lead base plug. The base of the A.P. core is seated in the base plug. The envelope has a small hole 0.013 in. in diameter just above the streamlined portion. The hole which is closed by fusible metal and is covered by the neck of the case provides the outlet for the phosphorus after firing. The base of the bul-let is soldered. |
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| 13. HIGH VELOCITY ARMOUR PIERCING |
| The bullet is similar to the S.m.K. A.P. |
| 14. HIGH VELOCITY ARMOUR PIERCING/TRACER (Fig. 6) |
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The envelope contains a hardened steel A.P. core and a tracer tube enclosed in a lead sleeve and is closed at the base by a magnesium washer under which the envelope is turned. The tracer tube is of steel and is coated on both sides with gliding metal. The tube contains a night tracing composition inserted in three concace pressings, a priming composition with coned finish and finally a dark ignition composition with a serrated finish. The ignition composition is covered by a pink plastic disc of polymerized oil. |
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The trace is white and bright, becoming visible at approximately 150 yards and tracing up to 1,100 yards. |
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Analysis of Composition |
| Dark Ignition | Priming | Tracing | |||
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Per cent |
Per cent |
Per cent |
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Magnesium |
2.7 |
Magnesium |
30.0 |
Magnesium |
30.9 |
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Barium Peroxide |
0.8 |
Barium Peroxide |
39.6 |
Barium Peroxide |
29.5 |
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Potassium Nitrate |
50.0 |
Strontium Picrate |
14.2 |
Strontium Nitrate |
10.3 |
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Sulphur |
6.1 |
Sodium Oxalate |
6.8 |
Sodium Oxalate |
12.6 |
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Charcoal |
15.9 |
Phenolic Resin |
9.4 |
Phenolic Resin |
12.4 |
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Antimony Sulphide |
13.9 |
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Volatile Matter |
4.3 |
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Phenolic Resin |
10.6 |
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and oxidation pro-ducts |
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| 15. HIGH VELOCITY ARMOUR PIERCING/INCENDIARY |
| The bullet is of the same type as that described in para. 12. |
| 16. HIGH VELOCITY ARMOUR PIERCING WITH TUNGSTEN CARBIDE CORE (Fig. 7) |
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The bullet, in addition to having a tungsten-carbide core instead of one of hardened steel, differs from the S.m.K. type n having a plain base instead of being streamlined and is 0.34 in shorter in length. The A.P. core is flat based and has a blunt tip. The base of the core has a ground finish while the surface varies along its length. The rear part of the parallel portion is rough, the forward part is ground smooth, while the ogival head is ground and polished. |
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