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|  MIL-C-70724(AR)
3.4.5 Function and casualty. The cartridge shall function
without casualty within the temperature range of -25F through
+125 in the weapons equipped with the indicated blank firing
attachments specified below. The cartridge shall function safely
(no critical defects in accordance with Table IV) within the
temperature range of -65F through +155F.
BFA
Cyclic Rate
Weapon
Min
Max
M15A2
550
920
M16Al Rifle
M16A2 Rifle
M15A2
550
920
M231 Sub-Machine Gun
M22
M15A2
650
950
M249 Machine Gun
3.4.5.1 Cyclic rate. The cartridge shall operate the
weapons within the rate limits specified in 3.4.5, within the
temperature range of -25F through +125F.
3.4.5.2 Noise level. The noise level of the blank
cartridges shall be greater than 100 decibels when the noise level
of ball-cartridges fired under identical conditioner except for
the use of the BFA, is between 120 and 130 decibels. The maximum
noise level at the gunners ear position shall not exceed 164
decibels.
3.4.5.3 Screen perforation.
3.4.5.3.1 Screen perforation with BFA. The cartridge, when
fired, shall not cause perforations of greater than 0.1 inch in
diameter in a paper screen placed 15 feet from and oriented
perpendicular to the direction of the BFA orifice.
3.4.5.3.2 Screen perforation without BFA. The cartridge,
when fired without a BFA, shall not cause perforations of greater
than 0.1 inch in diameter in a paper screen placed 15 feet from
and perpendicular to the weapon muzzle.
3.4.5.4 Breech flash. When fired in the specified weapons,
the cartridge shall not cause flash from the breech of the weapon
which would endanger the shooter.
3.4.5.5 Fouling. The fouling produced by the cartridge
shall be readily removable through standard cleaning techniques.
The fouling produced by the firing of 500 cartridges shall not
cause a change in cycle rate, from the first to the last burst,
greater than 15%.
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