If I am going to play Charles Bronson and go out looking for trouble, I am going to take something bigger than a 380.
Charles Bronson used a .32 S&W Long revolver for most of the first "Death Wish" movie. It seemed to be quite a cannon. And James Bond used to shoot down helicopters and snipe bad guys from 200 yards away with a .22 LR, while carrying his 7.65mm PPK that had a "delivery like a brick through a plate glass window".
They were experts before the internet.