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|  MIL-C-70785 (AR)
2.2 Order of precedence. In the event of a conflict between
the text of this specification and the references cited herein,
(except for associated detail specifications specification sheets
or MS standards) the text of this specification, takes
precedence. Nothing in this specification, however, shall
supersede applicable laws and regulations unless specific
exemption has been obtained.
3.
REQUIREMENTS
The cartridge shall be in accordance with
3.1 General.
Drawing 12910010, referenced specifications, publications and
other requirement s specified herein.
a. Material. Materials shall be in accordance with
applicable drawings and specifications.
b. Manufacturing process. All parts and assemblies shall
be manufactured by a process approved by the contracting officer,
and no deviation from that process shall be madewithout prior
approval. of the contracting officer (see 6.7).
3.2 Projectile extraction. The tensile force necessary to
extract the projectile from the cartridge case shall be between
2000 and 4100 lbs. inclusive (see 4.4.1).
3.3 Projectile torque. The projectile shall withstand a
minimum of 30 in-lbs torque without rotational movement (see
4.4.3).
3.4 Velocity. The average muzzle velocity of the sample
shall be 1100 15 meters per second (mps) when
conditioned at 21 3C. The sample standard deviation shall
not exceed 10 mps (See 4.4.4).
3.5 Pressure.
The average peak chamber pressure of the
sample cartridge, conditioned at 210 + 3C, plus 0.72
standard deviations of peak chamber pressure shall not exceed 402
megapascals (Mpa) l No individual sample cartridge shall exceed
496 MPa. Pressure shall be measured with a piezoelectric type
pressure transducer, dwg. 12910127, located as specified on dwg.
12910126 (see 4.4.4).
3.6 Waterproofness. The average velocity (wet) of the
projectiles of the sample cartridges, conditioned at 21
3C, shall. not vary from the average velocity (dry) by more than
30.5 mps. The action time of the (wet) cartridges shall not
exceed 6.0 milliseconds (ins) (see 4.4.4).
3
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