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Types of Ballistic Resistance Defined by NIJ Standard 0101.03 in Terms of Bullets and Velocities Specified for Testing
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Type
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Bullet caliber and type
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Bullet mass (grains)
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Impact velocity1 (ft/s)
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I
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.22 long rifle high velocity
.38 round nose lead
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40
158
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1,050
850
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II-A
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.357 jacketed soft point
9 mm full metal jacket
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158
124
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1,250
1,090
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II
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.357 jacketed soft point
9 mm full metal jacket
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158
124
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1,395
1,175
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III-A
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.44 magnum lead semi wadcutter gas checked
9 mm full metal jacket
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240
124
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1,400
1,400
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III
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7.62 mm full metal jacket
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150
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2,750
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IV
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.30-06 armor piercing
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166
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2,850
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Special
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Custom
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custom
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custom
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1Minimum velocity; the maximum velocity for a fair hit is 50 ft/sec greater.
Source: National Institute of Justice, 1987.
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