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|  MIL-C-70724(AR)
APPENDIX C
c. The test cartridges being linked or loaded into
magazines shall be examined for obvious defects. If visual
defects are found, the defective cartridge(s) shall be replaced
and the defects shall be noted on the test sheet form.
d. Every 500 rounds of linked ammunition shall be
prepared as two 200 round belts and one 100 round belt.
e. After the cartridges have been linked or loaded into
magazines, they shall be conditioned at the required temperature
for not less than two hours.
The following procedure shall be followed:
Firing.
50.2
a. Upon completion of storage, high or low temperature,
the cartridges shall be placed in an insulated box which has also
been conditioned at the specified temperature. The insulated box
containing the cartridges is then placed at a point convenient to
the technician. The cartridges are removed form the insulated box
and fired.
b. Firing shall be conducted in 500-round segments in
accordance with the firing schedules of Table CI. The 500-round
segments shall be repeated until the required test quantity is
fired. The round counts for the M249 shall be estimated.
c. No more than 30 seconds delay is permitted between
magazines.
d. Cooling of the weapon to ambient temperature with
forced air shall be performed as required by the firing schedule.
BFA's shall be checked and tightened upon weapon cooling.
e. Fired cases shall be visually examined by the
technician for possible case casualties.
Cyclic rate.
50.3
50.3.1 Cyclic rate measurements. Cyclic rate measurements
shall be taken as indicated on the firing schedule. For the M16A2
cyclic rates shall be taken on the first complete three-round
burst fired from a magazine. For the M16A1, M231 and M249, a
minimum of 20 rounds must be recorded for the cyclic rate to be
valid.
C-2
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