It's also a really good idea to try shooting from a rest if it's available. That really helps to show whether it's you or the gun. I've seen a lot of guys printing really low and swearing they were on target when they pulled the trigger. Almost to a man they were rushing forward in anticipation as they pulled the trigger which forced the barrel down slightly. Shooting from a rest they generally put them at least in some sort of group on the paper. As mentioned 25 yards the first time out can be daunting. Interesting choice for your first revolver.