If your not interested in trying the more expensive hevi shots try some of the Win HV shells in different combinations. One thing you will want to take into consideration when trying to find the best pattern for you shotgun is maintained down range kinetic energy. You can go to the smaller diameter shot and increase the number of pellets in a pattern but the smaller shot will not produce the down range kinetic energy that the bigger shot will so finding that in between is what your looking for. The heaviest shot with a good pattern is ideal. In my Remington 870 super mag 12 gauge after a lot of testing of different shells and chokes I found that my gun patterned the best with Win HV 3.5", 2 oz, 5 shot through a .665 Maxx Maxx choke. Not sure if this choke is even still available (was offered by the Drury Brothers) but out of all the chokes I tried the Madd Maxx patterned the best nd that particular shell also patterned best out of my gun. This setup patterns so well out of my gun that I have never even tried the hevi shots. Just wasn't no need to. It is a trial and error situation for each individual gun and if you want the best pattern out of your shotgun that you can get there is no way around it. What is nice if you have some buddy's with the same gun that you can try each other's different chokes so you don't have to buy several yourself. I believe the Madd Maxx was right $70 so they're not cheap.