As far as tuning on the C&B Revolvers: I'm by far any expert. But there were three things I had done to both my Army and Navy.
1. A 3-lb, trigger pull.
2. An 11-degree cut on the forcing cone.
3. A taller front sight.
I found that at 7-yards, off-hand, they hit right where you point them. At 15-yards, still real close.