Practice loading and unloading with snap caps. Also, make sure you get enough range time to practice stance, grip, sight picture and trigger control - for as much stopping power as they possess, .357s can be tough to control in a high-adrenaline situation.
Personally, I carry a high-cap (10-round) .45ACP and and least one spare mag. It's getting seriously weird out there.
When they see the gun, they run. There are too many unarmed victims to risk getting shot by an armed one.
Just recently dusted off the wheel gun. Been wearing a Browning Hi-Power for years, but its kind of a flashy thing and has way to many safeties on it for my liking. I got some new leather and a real nice new (small enough) grip that I can really hold onto. It bucks and twists a bit with the snubby barrel, and turns into a real ball of fire after dark, but you cant beat that warm fuzzy feeling!
Always remain calm. No warning shots.