If I wanted the best pattern that I could get I would go with Nitro straight 7's.
The next two on the list would be Hevi 13 3-2-6, or the Win Xtd Range #6's.
The Hevi 13 #7's should be delivering soon so you may want to hold off a little while and give them a try. Either way the three loads listed above will give you great patterns.