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|  MIL-C-70725A (AR)
The occurrence of any critical defect shall be cause for
rejection.
Function and Casualty Qualification testing at -55C and +68C
shall be conducted with both ammunition and weapons conditioned
at the test temperature. The acceptance criteria on Table IV,
for all defect classes, shall be applied to the results of this
testing.
a. If acceptable, performance in accordance with
Table IV at -55C and +68C is achieved, the remainder of the
function and casualty tests (-20C, +20C, +50C) may be conducted
with only the ammunition being temperature conditioned.
results of these firings must meet all Table IV acceptance
criteria.
b. Failure of the -55C or +68C firings to meet all
Table IV criteria for major or minor defects does not cause
rejection. However, it requires firing a portion of the function
and casualty (F&C) testing at the less extreme temperatures (-
20C or +50C), with both weapon and ammunition conditioned at
the test temperature. This shall be accomplished as follows:
(1) Failure at -55C will require firing 1000 rounds
at -20C with both ammunition and weapon conditioned at the test
temperature.
(2) Failure at +68C will require firing 1000 rounds
at +50C with both ammunition and weapon conditioned at the test
temperature.
(3) The 1000 rounds. shall be divided equally among
two weapons of the type that failed testing at either -55C or
+68C. All firings must meet all acceptance criteria of Table
IV.
(4) If the 1000 rounds fired above pass all the Table
IV criteria, the remainder of the F&C testing with that weapon,
at that temperature, (6500 rounds) may be conducted with only the
ammunition being temperature conditioned. These firings must
also meet all the acceptance criteria of Table IV.
4.6.9 Cyclic rate. Cyclic rates shall be recorded during
Function and Casualty testing.
Noise.
Test in accordance with Appendix E.
4.6.10
4.6.11 Breech flash. Observe for Breech flash during
Function and Casualty testing (see Appendix C, 50.5).
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