These run the gamut from one really tight to one modified or so and hevi in one with lead in the other, you name it. Know what you need for your situation and develop a combo that suits your guns limitations an dstick with it. Do not try to get too complicated. Do try both barrels at the same distance ie, 30 and 40 yards to see if they are close to POA/POI .
I like having a very convincing first shot and saving the other shell for the next bird.