I have seen some friends of mine use Patternmaster chokes, with Hevi-Shot, which we call "Dead Coyote" loads, and I personally saw it work great at 25 yards on a Tom, but I soon after shot mine with my uncle's shotgun, using a simple factory choke and Winchester X 3" magnum at 33 yards, because the 3 1/2 ammo wasn't patterning worth a darn, but after the hunt, we finally started using the Hevi-Shot, and it does make a difference, in fact, my uncle killed a great Tom at 50 yards using it, simply because he practiced, but the ammo made it there, and did the job well in the hands of a skilled shooter.