i've just got back into shooting shotguns from when i was a kid, and could do with some help. i shoot a side by side. i seem to miss quite alot(not hitting as much as i like and the clean kills arent as i'd like. i have never understood the fore sight , if i put it on a still target i just abouts hit it, it shoots low, is it a rule that you should shoot higher. any help would be good