I bought ten cases of 28 ga. and .410 in AA Winchester ammo. When we found a couple of .410 brass already split before firing, new in the box, we would open up a box and dump it out and pick out the split shells. There was at least 6-8 in every box. Never ever will I buy AA Winchesters. From now on, Remington only. Sts or Nitro 27. Frank