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.
I am concerned sometimes about people who carry semi-autos but refuse to carry them in a ready condition (round in the chamber) as though they will have time to rack a slide in the presence of a close-in threat condition; that is not a good idea when seconds count and your body's adrenaline is giving you tunnel vision and cranking up your heart rate. Nothing wrong with having a thumb safety engaged while in the holster, but it's something you have to practice repeatedly so that your thumb moves on instinct before you level the front sight.
And you're right on about "no warning shots". If the bad guy(s) don't back off and still constitute a mortal threat after you've presented your weapon, your duty to withdraw has expired. Remaining calm and focused is a function of the confidence earned by training and forethought.
The good thing is, most criminal types will quickly disappear and find someone else to prey upon once they see you are armed.