I use a thigh wad, by primus, which in my 870 super-mag, with #5 heavyweight federal 3 1/2" has provided consistantly super patterns listed below:

35 yds: 41 kill zone bb's & over 85% in 30" circle

45 yds: 20 kill zone bb's & over 60% in 30" circle

Either of those patterns is more than enough to get the job done