The fluted cylinder Army was an early variation of the "Belt Pistol of Enlarged Caliber" as it was called on Colt schematics. Colt was attempting to make the most of the new mass-produced steels by lightening the cylinder. After a few of them blew up, he digressed to the unflutted cylinder more commonly encountered.
My 2004-made fluetted army is very lightly sprung and has an action that a serious competitor would love. Timing is perfect and lock-up is tight. The cylinder bore measurements are optimum at .450" and bench groups shot with it hover at the one inch mark at fifty and sixty feet. It is the revolver I pick up when I want to dazzle myself and others with accuracy.
Minor problems included a loading lever detent that tended to walk out of its dovetail. I tightened the dovetail in the barrel and corrected that. The barrel locater pegs in the front of the frame tended to fall out upon disassembly for cleaning and I had to stake them in a bit harder. Other fine tuning or action work would be counterproductive as the revolver is as perfect as a master gunsmith could make it.
This revolver matches the quality of modern designs that retail for more than twice the price.