Since we're talking speed - Jerry's got to have fingers as quick, almost as quick or perhaps even quicker than 'ol Ed McGivern at his peak.

Ed's best was 12 shots, 1.5 seconds on a paying card at 10 paces - revolver in each hand, 6 shots each, including the draw.
Ed used a Police Positive in his left hand and S&W M10 in the right. They weren't modified for short pulls- standard, but T-pulls of course, not stock.