posted on Apr, 19 2004 @ 04:28 PM
If you made me guess, I would say it is more of a matter of bullet design than muzzle energy since the FN round is designed to bridge the gap between
pistol caliber submachineguns and rifles. Here is a blurb off the FN website:
The SS190 due to its unique design with two inserts, the tip of the ogive has a steel penetrator followed by an aluminum core heavier than the
forward tip, will cause the bullet to tumble in soft body tissue after 2 inches of penetration. The SS190 virtually eliminates the risk of over
penetration This terminal ballistic behavior will cause large wound cavity and quick incapacitation. The SS190 will perforate 48 layers of Kevlar up
to 200 meters when fired from the P90 and achieve the same result up to 50 meters with the FsN handgun. The 5.7 ammunition has only 60% of the recoil
impulse of a 9mm. There are four types of ammunition: the duty SS190 (0.41c/round), the tracer L191 (0.69c), the subsonic Sb193 (0.44c) and the
training round T194 (0.29c).
That covers Class III & IIIA body armor (the bulky tactical vests for protection against military ball ammo and sporting rifles), but not Level IV
which often has the ceramic plates to stop AP rounds (30-.06 and 7.62mm AP). Either way, a 93gr. bullet at 2,300fps is nothing to sneeze at,
especially at 900rpm!
-Sorry, you asked about Interceptor
specifically. The maker says that it "Exceeds NIJ Level
IIIA 9mm protection" without the additional hard inserts (boron carbide) and, if I read correctly, with TAP IV inserts can withstand multiple
of .30 caliber armor piercing (AP2) rounds at 2850 fps!
[Edited on 19-4-2004 by Spectre]