Good question
I definitely have a better kill ratio with an O/U; however, the classic looks of SxS are really attractive, but harder to hit. Clearly mental, most people who use both feel the same and some won't even bother with SxS b/c they can't hit anything. Other than the mental aspects, if anyone has thoughts about how to be a better shot with SxS and comments on barrel length for flatness of pattern at certain distances, I'd be very interested in hearing them. Thx.