Thinking about buying a Simmons 2 X 32 for my .44 mag. Raging Bull, but my main concern is light. Will it help my aiming it low light like a rifle scope will? Using my rifle scope, I can pull my hat down low to block out the horizons light and concentrate on looking through the scope. I've never used a handgun scope and I know you are supposed to keep both eyes open and your holding the scope about 16 inches away so you cannot block out the unwanted light. Will this benifit inlow light, or should I just do something with my iron sights?