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Classes of body armor protection 

United States of America

ShootInfoShootInfo Info 10.03.2018

US National Institute of Justice (NIJ)

 

Classes Subclass

Cartridge

(mm)

Bullet weight

(g)

Initial speed of the bullet

(m/s)

Bullet Type
  IIA  9 mm  8.0   373 (1225 ft/s)

FMJ RN 

(Full metal jacket 

Round Nose)

 2  .40 S&W

 11.7

352 (1155 ft/s) 

FMJ 

(Full metal jacket)

  II 9 mm   8.0  398 (1305 ft/s) 

 FMJ RN

(Full metal jacket 

Round Nose)

 2  .357 Magnum   10.2 436 (1430 ft/s)  JSP ( jacketed soft point)
IIIA   1 .357 SIG  8.1  448 (1470 ft/s) 

 FMJ FN

(Full metal jacket 

Flat Nose)

 2 .44 Magnum  15.6   436 (1430 ft/s) 

SJHP 

(Semi-jacketed hollow point)

 III   1 7.62 mm NATO    9.6  847 (2780 ft/s) 

FMJ 

(Full metal jacket)

 IV   1 30 Cal. M2    10.8 878 (2880 ft/s) 

AP 

(Armor-piercing)

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