Denton, soft body armor was developed to defeat handgun ammo. There is a lot of useful info out there regarding self defense carry and shooting. It appears that you already know how to aim and shoot a handgun but are bereft of knowledge of the current state of self defense utilizing a handgun. You may find a force on force class enlightening and instructive. Good luck.
mike r
Don't wish it were easier Wish you were better
Stab them in the taint, you can't put a tourniquet on that. Craig Douglas ECQC