IT REALLY DEPENDS ON THE GUN THE BEST WAY IS HAVE ALL YOUR BUDDYS AND YOURSELF BUY DIFFERENT SHOT SIZES AND LENGTHS AND BRANDS AND CHOKES,THEN GET TOGETHER AND TRY THEMALL OUT AT DIFERENT RANGES THEN WITHOUTA DOUBT YOU WILL KNOW WHAT YOUR GUN NEEDS, BEEN DOIN LIKE THIS SINCE 1991 ..GOOD LUCK AND KEEP THEM BIRDS A FLOPPIN..MY 2 CENTS THANKS SWAMP ROOSTER....