Any shot size recommendation?

no 6 is the prefered shot by most..but i like a no 6 in the right barrel and a no 4 in the left...that is if your right handed if left handed just switch them around...i dont know what your chokes are but the no 6 should be in the more open barrel and the no 4 with the one which has the most choke...this could get confusing... anyway put the 6 in the right and the no 4 in the left... charlie