On this site they have a Ballistics Testing Comparision Tool that shows their different bullet tests.
Winchester Law Enforcement
I was playing around with it and it says that their 380 "T" series bullett will penetrate 9.3" of steel. :gah: I have trouble with this so can someone explain this to me? :35:
Their .40 Cal will penetrate 20.4" of steel. Talk about armor piercing. :22a: