Remember "most" folks do not shoot a SXS very well until it is properly fitted.
Example: On a SXS with neutral cast I look down the left barrel, which causes the pattern to be at least 4inches left at 16 yards.
I guess I am reading this wrong, but if I where to look down the left barrel of a side by side I would expect my pattern to be hitting right not left. What am I missing? Also I always understood right hand shooters to have cast on not cast off. I am so confused.