Too accurate? Not on your life, there is no such thing. While it is true that in a self defense situation you and the BG may be moving being able to put shots where they count is what its all about. Your groups show that you can do so when stationary. Also for head shots, when I went through the police academy in 1995 we had a hostage target. The scenario was that this BG had taken this person hostage. This is not something any officer wants to confront. We were each armed with a 4" S&W 686 firing 38 Special +P ammo. We could choose to shoot or not to shoot. I initially chose not to shoot because of the hostage. The academy instructor then changed the scenario to the BG having a knife and was drawing it across the hostage's throat. I told I had no choice now and took the shot. The shot went between the nose and right eye of the BG. If I or my partner had missed and hit the hostage we would have had to repeat that part of the course. Fortunately we both made our shots. Head shots are difficult but sometimes necessary. Keep training and if possible add some movement to your train regimine.