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In-process controls.
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Cartridge, 25mm, Target Practice Tracer (TP-T), M793 Reference
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Process deviation



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MIL-C-70785 (AR)
4.5.2  Uniformity of charge.  Once the propellant charge has
been established, a loading/charge machine shall be selected which
has shown the best uniformity in charge weight during a production
run. Only one loading machine shall be used in the loading of the
reference cartridges.  Every thirty (30) minutes during the
machine loading of the lot of reference cartridges, five (5)
sample cartridges shall be taken from the machine and the
propellant weight measured to the nearest 0.1 gram.  Charge
weight shall be maintained within 0.1 gram of the established
charge weight.
4.5.3  Loading control.  A quantity of 20 rounds shall be
fired for pressure and velocity for each four hours of and eight
hour shift to establish velocity and pressure values, and check
the charge weight and uniformity of charge weight every hour.
Once established, the charge weight shall remain constant
throughout loading.
PACKAGING.
5.
5.1  Packing, level A.  Ammunition shall be packed in
accordance with Dwg. 12013674.
5.2  Marking.  Marking on the packed container shall be in
accordance with MIL-STD-129, Dwg. 12013674 and CFR Title 49, as
applicable.
NOTES
6.
6.1  Intended use.  The cartridges covered by this
specification are intended for use as reference cartridges for
calibration purposes in 25mm cartridge acceptance testing.
See MIL-A-48078.
6.2
Acquisition requirements.
Standard deviation.  Where computation of
6.3  Computations.
a sample standard deviation is specified for determination of lot
the method of computation will be:
acceptance,
each individual value
Where:
sample arithmetic mean
sample size
6.4  Combining test.  In order to minimize testing costs,
tests may be performed concurrently on the sample cartridges
provided that the test results are not affected by this procedure.
17

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