Originally Posted by jstkrsn
I have two 380's. One is a FI Model D and a Beretta Model 84. I was planning on using the +P ammo in the Beretta only because it has an obvious thicker barrel. The FI barrel is thinner so it may not be able to handle the increased pressure.
Call the manufacturer and ask. The response will speak volumes about the company.
Here's some reading that will help;