I shot RussD's AR and it has a red dot scope (and that's all I know) but I was very accurate with that at 100 yards (1-2 inch groupings) almost center, a lil high left... but I was very happy with it.
ok, this explains why I only see a jumbled mess when trying to aim a pistol with both eyes open using my right eye. Apparently I'm left eye dominant also, but have always closed my left and aimed and shot righty. After reading this thread I tried aiming with both eyes open, but using my left eye and it was much easier... Guess it's back to the range for more practice..!!