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|  MIL-C-46552C
6/ Velocity.-If the sample fails to comply with either or both require-
ments, a retest sample of 80 cartridges shall be tested for the failing
parameter(s) (average, sample standard deviation). The lot shall be re-
jected if the retest sample fails to comply with the applicable require-
ments. (see 6.7.1)
.
7/ Pressure. -If the average pressure (X) plus 0.84 times the average range
(R) of the sample
exceeds 60,500 psi, a retest sample of 40
cartridges shall be tested. The lot shall be rejected if the average
pressure (X) plus 0.91 times the average range (R) of the retest sample
exceeds 60,500 psi. (see 6.7.2)
8/ Waterproo fness.-If the average velocity (wet) of the sample fails to
comply with the applicable requirement, a retest sample of 40 cartridges
shall be tested. The lot shall be rejected if the average velocity (wet)
differs by.more than 100 fps from the average velocity (dry) of 40 addi-
tional sample cartridges fired to establish a new base for comparison.
The lot shall not be penalized for failure of the last named sample car-
tridges to comply with the requirement of 3.7.
9/
.-If the average mean radius of the sample cartridges exceeds
the applicable requirement, a second sample of 80 cartridges shall be
tested. The lot shall be rejected if the average mean radius of 8
accuracy targets exceeds the requirement.
shall
10/ Action time.-For acceptance, each cartridge of the test
exhibit an action time not excceeding 4 milliseconds (0.004 second) and
the sample average action time (X) plus 4 sample standard deviations (S)
shall not exceed 4 milliseconds.
lot shall be rejected if any malfunction
11/ Function and casualty
or firing casualty of Table II occurs in number(s) equal to or greater
than the applicable "Rej" numbere Except as
provided, if mal-
functions or casualties occur in excess of the applicable "Ace" number,
but less than the applicable "Rej" number, a second sample of 800 car-
tridges shall be divided and fired in equal numbers in the M39 and M61
guns. The lot shall be rejected if in the combined samples, malfunctions
or casualties occur in numbers equal to or greater than the applicable
"Rej" number.
4.4.4.1 Firing defects.-Firing defects and associated criteria shall be
as specified in Table II. For defect definitions, see AMCR 715-505,
Volume 8.
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