That's pretty good shooting. I am only that effective at 50ft or less with my .357. Funny at 50' I can put four or five of six in the bulls eye, at 75 feet I can't even hit the target!
Don't feel bad. Under the bending stress of an actual defensive shooting, many good shots are lucky to hit a torso at 25 feet.
Try shooting your revolver single action (i.e., cock it manually for each shot). Your hit percentage should go up. Double-action weapons are harder to shoot accurately at longer ranges, and they're slower to shoot - which is why I stick with single action automatics.