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|  MIL-C-70509(AR)
3.2 Material. Materials shall be in accordance with the
applicable drawings and specifications.
3.3. Parts. The parts shall comply with all requirements
specified on Dwg. 9378265, all associated drawings, and with all
requirements specified in applicable specifications.
3.4 Bullet extraction. The average force necessary to
extract the bullet from the cartridge case shall be not less than
80 lbs, nor shall any individual extraction force be less than 60
lbs.
3.5 Residual stress. The cartridge case shall not split when
subjected to one percent mercurous nitrate solution for 15 minutes.
3.6 Chamber pressure. The corrected average peak chamber
pressure of the cartridge at the case mouth position shall be 276
MPa plus or minus 15 MPa when conditioned and fired at 21C.
The standard deviation of the chamber pressures shall not exceed
11 MPa. When conditioned and fired at the following temperatures,
the uncorrected average peak chamber pressure at each temperature
shall not vary by more than plus or minus 20 MPa from the
uncorrected average pressure obtained at 21C.
OC
+38C
3.7 Waterproof. When placed under water and subjected to a
one half atmosphere negative pressure for 30 seconds, the
cartridge shall not release more than one bubble of air.
3.8 Primer sensitivity. The energy imparted by a 55 0.5
gram steel ball falling 12.0 inches shall initiate all primers.
The energy imparted by a 55 0.5 gram steel ball falling three
inches shall not cause initiation of the primer.
3.9 Workmanship. The requirements for workmanship are as
specified on the applicable drawings, referenced specifications
and the following:
3.9.1 Metal defects. The cartridge shall be free of folds,
wrinkles, deep draw scratches, scaly metal, dents and other
defects.
3.9.2 Foreign matter. The cartridge shall be free of
corrosion, stains, discoloration, dirt, oil, and smears of lacquer.
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