MIL-DTL-46200C
rejection. Radiographs of the entire production lot shall accompany the ballistic sample to the activity
conducting the production lot acceptance test. Discontinuities in serial numbers shall be identified on the
x-ray negative. Defective cartridges, found by the vendor, shall be clearly identified on the negative and
those defectives removed from the production lot. The serial numbers shall be pen or ink stamped on the
cartridge with approximately 1/8-inch-high characters. The serial numbers shall be located apart from the
other cartridge markings (see 6.2).
4.7.5 Leak Test. Each cartridge shall be subjected to specified pressure differential. The method for
determining leak test shall be with a helium mass spectrometer. The helium leak rate shall be converted to
standard cubic centimeters of air. Failure to comply with the requirements of 3.5.2 shall be cause for
rejection of the cartridge.
4.7.6 Sealant application. Five cartridges from each production lot shall be selected for this test.
Failure of any cartridge to comply with the drawing requirements shall be cause for rejection of the lot of
cartridges.
4.7.7 Vibration test. Twelve of the 21 assembled cartridges of the first article sample, x-rayed as
directed in 4.7.4, properly identified, shall be subjected to vibration. The method and procedures for
performing the vibration test shall be in accordance with MIL-STD-810, Method 514.3, Test Procedure I,
Test Condition I-3.2.5 (see 6.2). Then the 12 vibrated cartridges shall be x-rayed again. Evidence of any
disintegration of the primer, propellant, or igniter, or derangement of any component shall be cause for
rejection of the sample.
4.7.8 Functional. The following tests shall be performed by the Government.
4.7.8.1 Primer sensitivity. A quantity of cartridges, in accordance with table II, void of igniter and
propellant, from the first article sample and each subsequent lot shall be tested for sensitivity. In the event
loaded cartridges are selected for test, remove and discard all powder charges from the test cartridge by
sectioning the cartridge case around the periphery. Drop test at 15 inches (adjusted) using a steel ball
weighing 3.94 ± 0.02 ounces, in a primer sensitivity machine with a cartridge holder approved by the
acquiring agency. The height of 15 inches shall be adjusted taking into consideration the actual weight of
the ball so that the energy level specified in 3.6.1 is achieved. Failure of the sample to comply with 3.6.1
shall be cause for rejection of the sample or the lot.
4.7.8.2 Ballistics.
4.7.8.2.1 First article. Twenty-one cartridges of the first article sample shall be grouped and
temperature conditioned as described in table III and 4.8. Following removal from the conditioning
chamber, the cartridge shall be tested as required by 3.6.2.2. Failure of any cartridge to comply with 3.6.2.2
shall be cause for sample rejection.
4.7.8.2.2 Production lot acceptance. Twenty-one assembled cartridges from each production lot shall
be divided into three equal groups, temperature conditioned, and fired in accordance with 3.6.2.2. Failure of
any cartridge to comply with 3.6.2.2 shall be cause for rejection of the lot. In addition to the sample of
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