MIL-PRF-70600B
Table I. Bullet velocity and accuracy requirements
Accuracy
Accuracy Range
Velocity
Type
Nomenclature
Extreme Spread
/ Test Barrel
(ft/sec)
Average
Length
100 ± 0.33 yards
I
Standard Velocity for Rifle
1,135 ± 90
2.0 in. MAX
/ 20 in. MIN
100 ± 0.33 yards
II
High Velocity for Rifle
1,235 ± 90
3.0 in. MAX
/ 20 in. MIN
100 ± 0.33 yards
III
Match Grade for Rifle
1,100 ± 90
1.25 in. MAX
/ 20 in. MIN
50 ± 0.33 yards /
IV
Match Grade for Pistol
1,135 ± 90
2.5 in. MAX
8 in. MAX
3.2.4 Chamber pressure. The maximum average chamber pressure shall not exceed
26,000 PSI when fired from a 24.000 +/- 0.010 inch test barrel. The maximum individual
chamber pressure shall not exceed 30,100 PSI. These pressures shall not be exceeded when firing
cartridges that have been conditioned (as unpacked cartridges) for at least one hour at the
following temperatures prior to firing:
a. Ambient: 70 + 10 degrees Fahrenheit.
b. Hot: 125 + 5 degrees Fahrenheit.
c. Cold: -20 + 5 degrees Fahrenheit.
3.2.5 Function and casualty. The cartridge shall function without casualty when
conditioned at ambient temperature of 70 + 10 degrees Fahrenheit for at least one hour.
3.2.6 Projectile integrity. The cartridge projectile or bullet shall not burst or fragment in
the barrel or during its entire flight when fired.
3.3 Interface and interoperability requirements.
3.3.1 Cartridge physical parameters. The cartridge dimensions shall be as cited in
ANSI/SAAMI Z299.1 for a .22 caliber Long Rifle cartridge. In addition, cartridges shall be free
of dents, scratches and other imperfections.
3.3.2 Projectile weight. The projectile or bullet section of the cartridge shall weigh 40
grains ± 2 percent.
3.3.3 Projectile lubrication. The projectile shall be lubricated to prevent material buildup
in the barrels that would adversely affect performance or the cartridge s storage life.
4
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