Types of Ballistic Resistance Defined by NIJ Standard 0101.03 in Terms of Bullets and Velocities Specified for Testing
Type
Bullet caliber and type
Bullet mass (grains)
Impact velocity1 (ft/s)
I
.22 long rifle high velocity.38 round nose lead
40158
1,050 850
II-A
.357 jacketed soft point9 mm full metal jacket
158124
1,2501,090
II
1,3951,175
III-A
.44 magnum lead semi wadcutter gas checked9 mm full metal jacket
240124
1,4001,400
III
7.62 mm full metal jacket
150
2,750
IV
.30-06 armor piercing
166
2,850
Special
Custom
custom
1Minimum velocity; the maximum velocity for a fair hit is 50 ft/sec greater. Source: National Institute of Justice, 1987.
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