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|  MIL-C-70726A (AR)
3.4.4.8 Belt pull. The cartridge shall operate the M2 BMG
with M19 BFA and M85 MG with M20 BFA when a 100 round belt of
cartridges is loaded in the weapon and the belt of cartridges is
allowed-to hang freely.
3.4.4.9 Hot chamber effect. A cartridge inserted in the
chamber immediately following the continuous firing of 100
cartridges shall not fire (cook off). In addition the cartridge
shall not deform to the extent that clearing of the weapon is
made difficult following the proper waiting period.
The reliability of the
3.4.4.10 Chemical compatibility.
cartridge shall not be less than .900 at 90% confidence level
after having been immersed in the following lubricants solvents,
or chemicals:
Material
Specification
Lubricant, Semi-Fluid (LSA)
MIL-L-46000
Lubricating Oil, (LAW)
MIL-L-14107
Lubricating Oil, (ICE, T)
MIL-L-2104
Lubricating Oil, (ICE, A)
MIL-L-46167
Lubricant, (CLP)
MIL-L-63460
Lubricating Oil, (PL-S)
VV-L-800
Bore Cleaner, (RBC)
MIL-C-372
Insect Repellant
O-I-503
Dry Cleaning Solvent (SD-1)
P-D-680
3.5 Environmental.
3.5.1 Sand and dust. The reliability of the cartridge
shall not be less than .900 at 90% confidence level of the
reliability of the Caliber .50 M33 Ball cartridges when both are
subjected to the sand and dust test.
3.5.2 Corrosion. The cartridge shall fire safely in the
weapon after being subjected to a 5% salt spray solution for 48
hours.
cycling. After being subjected
3.5.3 Temperature/humidity
to a 10 day temperature/humidity
cycle, the cartridge when fired
shall not change the cyclic rate
of the weapon by more than 15%
and the reliability shall not be
less than .900 at 90% confidence
level.
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