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Page Title:
Appendix "A" Bullet Extraction Test Procedure |
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|  MIL-C-46409D (AR)
APPENDIX "A"
BULLET EXTRACTION TEST PROCEDURE
10.0 PURPOSE
The Bullet Extraction Test determines the force required to pull a bullet from its cartridge
case. It is used as a measure of the uniformity and efficiency with which bullets are secured in
the cases.
20.0 EQUIPMENT
Equipment listed in the Bullet Extraction section of the appropriate Inspection Equipment
list shall be used.
30.0 TEST PROCEDURE
30.1 Preparation for test
30.1.1 The testing machine should be calibrated either weekly or prior to each occasion of
use, whichever is less frequent. Calibration points shall included at least 30 pounds, 60 pounds,
100 pounds, 150 pounds and 250 pounds. If calibration errors exceed three pounds at scale
readings below 200 pounds or six pounds at scale readings above 200 pounds, then the
necessaries corrective action shall be taken to reduce the errors below these limits before the
bullet extraction test is conducted. The method of calibration shall be calibrated proof rings or
calibrated spring balances which shall yield values within 1% of true values.
30.1.2 Each test cartridge shall be secured in the jig fixture and, using a standard drill press
with a 1/8" drill, a hole shall be drilled completely through the bullet.
30.1.3 The number of cartridges as prescribed by the applicable specification are placed in a
recessed holding block which shall be placed at a point convenient to the technician.
30.2 Conducting the test
302.1 The cartridge shall be inserted into the case holding block on the pulling head and
aligned i the jaws. The jaws shall then se secured to the bullet just above the mouth of the case.
30.2.2 The load shall be applied.
30.2.3 When the bullet has been extracted from the case, the machine shall be stopped. The
tensile indicator records the force required to extract the bullet.
30.2.4 The case and bullet shall then be removed form the case-holding block and jaws.
30.2.5 The case with the propellant should be placed upright in a recessed holding block and
the extracted bullet placed point down in the mouth of the case. If the components not needed,
they shall be scrapped in accordance with local safety requirements.
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