I'd think it might be barrel regulation....if it's not a change of ammo might solve your problem.
jOe, I know what you're saying and given the stock configuation and the shooter, the right barrel is pointed too far left. OK, I agree it's a regulation issue...with the stock the way it is and with this shooter. The question is: can a stock cast change make it a non-issue? If it were a simple regulation issue, I would think I could get the two barrels hitting equally from the aiming point...then if the barrels needed to be spread or narrowed to hit on, it would straight forward.