Here's a picture of the high score at the most recent World Championship Still Target Shoot. It was shot with a stock Mossberg 930 with a 28" barrel and the SSX Turkey Choke, using 3" Hevi-13 shotshells with 2 oz. of #6 shot. I shot that gun in both the Open and Hunter classes for 2 days.
I found the 930 to be totally reliable and a patterning machine.
I had so much confidence in the 930. I'll write more about my experince with the 930 soon in another article but I wanted you to be able to see the types of patterns that this gun is capable of shooting.