What I always did when needing to see what the revolver/load would do is put a scope on it, bench it and try to take me out of the equation as much as possible. Then when I was back to irons I had confidence in the gun and knew that any screw ups were me.
It's also much easier to see results of the revolver/load scoped at longer distances. For me 50 yards would be minimum though most of my testing was at 150.
Rick