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|  MIL-C-48654(AR)
result of the drop shall be classed defective. All questionable
test assemblies shall be downloaded to verify primer/black powder
pellet functioning or non-functioning. All components used for
this test shall not be returned to their respective lots.
4.5.2.4 Cartridge drop test. The test assemblies shall be
assembled into inert-loaded, standard 60mm cartridges. The
twenty-five test cartridges less propelling charges shall be
dropped into a standard 60mm mortar at an elevation of forty-five
degrees. Any test assembly which fails to function shall be
classed defective. All questionable test assemblies shall be
downloaded to verify primer/black powder functioning or
non-functioning. All components used for this test shall not be
returned to their respective lots.
4.5.3 Leak test. The ignition cartridges shall be tested
100% in accordance with drawing 9278622. Any ignition cartridge
which fails to comply with the applicable requirement shall be
classed defective and removed from the lot.
4.5.4 Weight of propellant. The sample cartridge assemblies
shall be cut open using any method that will not generate chips
and all propellant removed and placed on the pan of a precision
analytical balance. The weight of propellant from each sample
shall be determined to the nearest 0.01 grain.
4.5.5 Velocity, functioning and security (providing ground
test). The test shall be performed at a Government Proving Ground
in accordance with the applicable USA TECOM Acceptance Test
procedure.
The sample ignition cartridges shall be assembled with a
standard finned projectile (3.75 pounds (lbs)) for which they were
manufactured. The complete assembly, less propelling charges,
shall be fired from a 60MM LWCM ballistic tube at an elevation of
forty-five degrees.
Reference rounds shall be fired without propelling charges for
the purpose of velocity correction. At least one reference round
should be fired for every three test rounds.
Individual velocities shall be recorded on the firing record
for both reference and test rounds. Velocity standard deviations
and arithmetic averages shall be calculated and recorded.
Temperature of the day and time of firing shall also be recorded.
In the event of a misfire, the misfired ignition cartridge shall
not be disassembled by the proving ground but shall be forwarded
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