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| GERMAN EXPLOSIVE ORDNANCE - PROJECTILES AND PROJECTILE FUZES |
| CHAPTER 5 |
| GERMAN PROJECTILES |
| PERCUSSION PRIMER M33 |
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EMPLOYMENT. Percussion Primer used on the German 47-mm cartridge case. (See fig. 323.) |
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| DESCRIPTION: |
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| 2.488 inches, over-all length. | |
| Number of holes, 30. | |
| 0.094 inch, diameter of holes. | |
| 0.625 inch body diameter. | |
| 0.875 inch, lip diameter. | |
| 0.250 inch, threaded length. | |
| Number of threads, 6 RH. | |
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CONSTRUCTION. Into the base of this primer is screwed an extra 3.1 gram charge of black powder. The brass body contains the standard anvil with a flash hole and a cap consisting of: |
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29.1 percent potassium chloride. |
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16.7 percent mercury fulminate. |
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43.4 percent antimony sulphide. |
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10.8 percent abrasives. |
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ACTION. The firing pin hits the rear of the primer forcing the cap against the anvil. The flash passes through the anvil firing the black-powder charge with then fires the propelling charge.
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