Target 18 is a nice pattern, it was using the reclaimed mix of 7.5 & 8 shot, and I will try it more, with plans to use it for grouse, squirrel, clay birds (singles at skeet when just practicing, maybe trap also). To be sure, that pattern would flatten a turkey at 25 to 30 yards.
I was thinking to use #5 for turkey, and with the 5's I like target 20.