Upon closer examination of the my cb -1100- 12 wads I found that the petals have a rib down the center of that gets thicker at the base and decreases the interior cup by at least .020 and results in a flaring of the petals. Use of the .125 nitro card does reduce the influence of the rib but it obviously increases the height of the column which in turn effects crimping. It is clear that a change of wads is appropriate.