There are so many dimensional issues to consider when we are thinking about revolver accuracy that the actual cartridge length is the least of our problems. Perhaps the most critical dimension is the diameter of the chamber throat which the diameter of the bullet must match if good accuracy is to be achieved. If your bullet is too small to match the throat diameter, regardless of the bore diameter, accuracy will suffer. The gap between the cylinder and barrel can be tight on some guns and sloppy on others, but this seems to have a greater effect on velocity than on accuracy. The angle and length of the forcing cone effects accuracy, and best accuracy is achieved when the bullet has fully passed through the cylinder gap before it is engaged by the rifling. In any discussion concerning accuracy, the quality and diameter of the barrel can't be ignored, and finally is the issue of whether or not each chamber is perfectly aligned with the bore when the cylinder indexes.
