The .22 caliber .223 (AR-15) or 5.7x28 have a smaller cross sectional area and sufficient velocity to penetrate body armor. A knife will slice with body armor with ease.
or a .357 Sig
36 posted on 12/16/2007 11:18:13 AM PST by Uri’el-2012
(you shall know that I, YHvH, your Savior, and your Redeemer, am the Elohim of Ya'aqob. Isaiah 60:16)
.357 Sig ballistics are nearly identical to .357 mag. The primary difference is .357 Sig is a semi-auto pistol round. One of our local SWAT officers took a .357 mag in the back. His vest stopped it, but it still left a big red bruise.
63 posted on 12/16/2007 12:18:26 PM PST by Myrddin