Well I almost hate to say this but with sand bags or a good pistol rest, a good revolver with a six inch barrel is capable of 2 inches or less at 50 yards and three inches at 100 yards. I have owned two revolvers that would shoot three inch six shot groups at 100 yards. One was a 6 1/2 inch barreled 610 S&W 10 MM revolver I shot the groups however with 40 S&W ammo. The other was a Ruger GP 100 with a six inch barrel. It would group three inches at 100 yards. I have a Dan Wesson 41 Mag Pistol Pac. The Eight inch barrel with that revolver will shoot four inch groups at 100 yards.

At the time I shot these groups, I was shooting probably 700 rounds of pistol and revolver rounds per week. This shooting combat and handgun steel silhouettes. Strangely enough my 25 yard groups were usually not much better than my 50 yard groups. A good 6 inch or longer barreled revolver is capable of very good groups out to 100 yards. I could never even come close to duplicating these groups with any auto. The closest one would have been one Glock 22. That was a tack driver Auto.