Best weapon for Concealed Carry advise

I was watching one of the crime dramas based on true stories. The part I remember is about two thugs, one a gang leader and the other his right hand man. The right hand man was a massive dude, lots of muscle and mass. They got into a disagreement and the leader shot the guy five times in the chest with a .357 revolver point blank. What truly amazed me was none of the slugs exited. Yes he died.

The .357 Magnum is one shag nasty round. It flat gets the job DONE.