MIL-PRF-70600B
4 .4 Methods of inspection.
4.4.1 Primed case sensitivity verification. The sample of empty primed cartridge cases
shall be tested in accordance with SAAMI Technical Committee Manual Vol. 1 Rimfire.
4.4.2 Velocity verification. The velocity test shall be tested in accordance with SAAMI
Technical Committee Manual Vol. 1 Rimfire and ANSI/SAAMI Z299.1-1992 . Test barrel
length shall be 24.000 ± 0.010 inches.
4.4.3 Accuracy verification. The accuracy test shall be tested in accordance with SAAMI
Technical Committee Manual Vol. 1 Rimfire. Test barrel length and range shall be as specified
in Table I.
4.4.4 Chamber pressure verification. The chamber pressure test shall be tested in
accordance with SAAMI Technical Committee Manual Vol. 1 Rimfire and ANSI/SAAMI
Z299.1-1992.
4.4.5 Function and casualty verification. All cartridges shall be fired in a ratio of 50
percent 50 percent through two unaltered commercial weapons. For all cartridges except Match
Grade cartridges, one weapon shall have a semiautomatic auto-loading action and one shall have
a manually operated bolt action. Each weapon shall have a total chamber and magazine capacity
of five cartridges minimum. Cartridges for Match Grade Rifle shall be fired from match grade
rifles with manually operated bolt actions. Cartridges for Match Grade Pistol shall be fired from
match grade pistol pistols, which have a semiautomatic auto loading action and a chamber and
magazine capacity of five cartridges minimum. All weapons shall be loaded to capacity and the
test performed.
4.4.6 Projectile integrity verification. Projectile integrity shall be tested concurrently with
function and casualty. A witness screen of at least 4 feet by 4 feet shall be placed at 5 yards from
the muzzle of the weapon, and examined for any evidence of bursting or fragmenting of
projectiles.
4.4.7 Physical parameters verification. All test cartridges shall be inspected for the
defects in Table V. The criteria for grading visual defects shall be in accordance with MIL-STD-
636.
4.4.8 Projectile weight verification. Projectiles shall be de-lubed and then individually
weighed.
4.4.9 Projectile lubrication verification. The sample cartridges shall be visually examined
for evidence of bullet lubrication.
4.4.10 Ammunition lot configuration verification. Visually verify that an ammunition lot
number has been assigned to each lot of .22 caliber rimfire cartridges in accordance with MIL-
STD-1168.
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