I had the pleasure of watching Bob Munden twice at US CAS events and an IPSC match. What he could do with a single action revolver beggared description. On one occasion, his wife also performed and she was as good if not better than him in some things.
I remember one stunt where he busted three balloons with a little baking powder or flour in them for effect. To our ears, it sounded like one continuous roar, albeit a very short one. Video showed the separate shots on the targets which had one yard between them at 10-15 yds.
He offered to 'tune' my Ruger Vaquero and I was tempted until he told me that it was going to cost more than I paid for the gun!