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|  MIL-C-70724(AR)
4.7.14
Continuous heating.
a. One half of the sample cartridges shall be subjected
to continuous heating at 120F and 15% relative humidity
for 120 days.
b. After the conditioning period, the conditioned cartridges
shall be fired in accordance with the function and casualty
firing schedule for 500 rounds with cyclic rate measurements
taken as indicated. The same firing schedule shall be repeated
with the same weapons using the nonconditioned half of the
sample cartridges.
c. For each weapon type, record the average cyclic rate
obtained with conditioned cartridges, the average cyclic rate
obtained with cartridges that were not conditioned and their
difference.
d. The estimated time required to clear any jams or
stoppages shall be recorded for each incident.
4.7.15 Continuous cooling.
a. One half of the sample cartridges shall be subjected
to continuous cooling at -40F for 30 days.
b. After the conditioning period, the conditioned cartridges
shall be fired in accordance with the function and casualty
firing schedule for 500 rounds with cyclic rate measurements
taken as indicated. The same firing schedule shall be repeated
in the same weapons using the non-conditioned half of the sample
cartridges .
c. For each weapon type, record the average cyclic rate
obtained with conditioned cartridges, the average cyclic rate
obtained with cartridges that were not conditioned and their
difference.
4.7.16 Rough handling. One half of the total sample plus 75
rounds shall be placed (loose) in M2A1 ammunition containers, with
between 100 and 200 rounds in each container. The interior
surfaces of the M2A1 cans shall be free of paint. Up to three
containers shall be placed on the test table and subjected to the
loose cargo test #14 of drawing 8837375 testing on only one
surface.
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