I second the Nitros
If you can afford them, NITROs with a Rhino choke is the cats bottom. I used 4X6X7 loads out of my Benelli SBEII, Remington 870, Benelli M2 20ga and
absolutely love em!
I had an issue using it here in NH because 7's were illegal. Too much trouble swapping loads to hunt other states but now that 7 shot is legal, I'll be going back to them for next year for sure.