The NIJ 0101.07 Standard calls for the following test rounds:
| Round | Velocity (ft/s) |
|---|---|
| 9mm FMJ RN | ~1,470 ft/s |
| .44 Magnum SJHP | ~1,430 ft/s |
In addition to stopping penetration, the armor must limit backface deformation to 44mm to reduce blunt force trauma.
To learn more about the NIJ body armor standards, read our Understanding Body Armor Ratings article.