MIL-DTL-48360A (AR)
4.3.3 Testing.
4.3.3.1 Propellant weight. Major defect. Propellant charge shall be weighed and
checkweighed 100% prior to filling the bag. Any propellant charge that does not comply with
the weight requirements of 3.3 shall be rejected and removed from the filling operation.
4.3.3.2 Proving ground.
4.3.3.2.1 PIMP (+145ºF) and average pressure (+145ºF) Major defects. For the first
three lots manufactured a ballistic quantity of twenty (20) charge assemblies shall be randomly
selected from each lot. If any individual pressure exceeds the requirement specified in 3.4.1, or
if the average pressure exceeds the requirement specified in 3.4.2, the lot shall be rejected.
4.3.3.2.1.1 Consecutive lots. After three (3) consecutive lots have complied with the
criteria of 4.3.3.2.1, a quantity of ten (10) charge assemblies randomly selected from each lot
shall be submitted. If any individual pressure exceeds the requirement specified in 3.4.1, or if
the average pressure exceeds the requirement specified in 3.4.2, the lot shall be rejected. If lot
failure occurs with three lots in succession, the sampling provisions shall revert back to 4.3.3.2.1.
4.3.3.2.2 Muzzle velocity and muzzle velocity standard deviation. All muzzle velocity
and muzzle velocity standard deviation samples shall be ballistic tested at 70 degrees F. Fifteen
(15) charges shall be fired for muzzle velocity and muzzle velocity standard deviation. If the
sample is determined unacceptable the lot shall be rejected. In addition, if the velocity standard
deviation of the sample multiplied by the factor 0.76 exceeds the applicable lot requirement, the
lot shall be rejected. Fifteen (15) calibration charges shall be fired alternately with the test
samples and the muzzle velocity and pressure of all the test charges shall be corrected to standard
conditions.
4.3.3.2.2.1 Consecutive lots. After three consecutive lots have met the criteria of
4.3.3.2.2, the sampling plan as above shall be used except that the sample size code letter shall be
changed to Code Letter F. In addition, if the standard deviation of the sample muzzle velocities
multiplied by the factor (see 6.6) exceeds the applicable requirements, the lot shall be rejected.
If lot failure occurs with three lots in succession, the sampling provisions shall revert back to
4.3.3.2.2.
4.3.4 Inspection equipment. The inspection equipment required to perform the
examination and tests prescribed herein is described in the "Paragraph/Inspection Method"
column in paragraph 4.3.2.1 through 4.3.2.8.
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