I have just recently got back into reloading after a long lay off and am having trouble with AA 12 ga. reloads. I am using a brand new mec 600 jr. AA once fires, red dot, and claybuster wads. The first bunch i reloaded did not look to bad except for the occasional ring around the center of the finished round and the uneveness on the top of the crimp. I tryed adjusting the finish crimp, it did not seem to help much. I have been pleased with the way they have performed so far. The second batch everything the same except i swithed to claybuster cb3118 wads, was using the waa the first time. Now the loads look terrible, a big ring around the center and it looks like the shell is out of round. once again i tried adjusting the finish crimp and it has not helped. I have not tried the wad pressure adjustment yet and if i do how much is too much. Any help would be greatly appreciated!!