MIL-DTL-46027K(MR)
APPENDIX A
using the smallest possible velocity spread. Ten-round ballistic limits shall be reported as
agreed upon between the contractor and procuring activity.
A.5.1.2.3 Reduction of large velocity gap in borderline cases. If the ballistic limit, which
has been determined, is within ± 10 fps from the minimum allowable ballistic limit and a
gap exists which is greater than 25 fps, then another round, or rounds, shall be fired to
reduce the gap to 25 fps or less. The ballistic limit shall then be recomputed using the
above criteria. The recomputed BL(P) shall be reported as the BL(P) of the plate (in
borderline cases, a reduction of the gap between the high partial penetration velocity and
the low complete velocity should result in a better evaluation of the BL(P)).
A.5.2 Rejection and retest of ballistic plates.
A.5.2.1 First article tests (rejection). Unless otherwise specified in the contract or order,
failure of any of the first article test plates to meet the minimum ballistic requirements
shown in the appendix of this specification indicates failure of the product and process.
A.5.2.2 First article (retests). Resubmission of ballistic retest plates shall not be made
until the manufacturer has made the necessary corrections in the processing of the
material to the satisfaction of the procuring activity. Two retest plates shall be submitted
for first article testing, and both tests shall pass; otherwise, the armor material shall be
rejected.
A.5.2.3 Acceptance tests (rejection). Unless otherwise specified in the contract or order,
failure of a test plate to meet the ballistic requirements indicates failure of the lot;
however, the final decision shall depend on the outcome of retests, if submitted.
A.5.2.4 Acceptance tests (retests). If a test plate representing a lot fails to meet the
ballistic requirement, the manufacturer, upon notification of the failure may submit at his
own expense two additional test plates from the same lot for ballistic retest. If either of
these plates fail the ballistic test, the lot shall be rejected. The manufacturer may elect to
resubmit the lot after retreatment of the entire lot by submitting two additional test plates.
If either of these plates fail, the lot shall be permanently rejected.
A.5.3 Disposal of ballistic test plates.
A.5.3.1 First article test plates. Upon request of the applicant within 15 days after
ballistic testing, first article plates shall be returned "as is" to the applicant, at his
expense, unless the plates were destroyed in testing.
A.5.3.2 Acceptance test plates. Acceptance test plates that comply with the requirements
of this specification are considered part of the lot they represent, and ownership of the
test plates passes to the Government with the acceptance of that lot. Acceptance test
plates that fail to comply with the requirements of this specification are considered part of
the lot they represent and remain the property of the producer. The now rejected lot also
remains the property of the producer. The failed plates shall be returned, upon request, as
in A.5.3.1.
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