i thought sxs the left barrel is tapperd to the right and the right barrel to the left so the pattern hits in the center right?? if thats how it goes a slug will keep sailing that way..sure it might not make that much of a diffrence within a certain yardage but say...you sight in at 50 dead on...say a nice buck it at 80...you have a good chance of wounding or missing because of that 30yds if it works how im thinking..but i dont know for sure...just seems like thats the only way they can get the shot to go where your aiming..i may be wrong..