You don't mention particulars. Are you looking for accuracy at any particular range? Particular degree of accuracy? There are tactical slug loads at reduced velocity that are at least more pleasant to shoot and possibly more accurate than the standard loads.

Note: you may find one brand of slugs to be more accurate in your particular arm. It pays to experiment and buy (a bunch of) what best meets your requirements. Point of impact with slugs is not necessarily that of shot. Again, experiment.