Check out B&P, particularly their "high pheasant" loads. $81/10 boxes and free shipping right now for the 1 oz loads in 6 or 7 shot. Nice shells, safe in any double that's ok for smokeless powder, and not much recoil. They also have other managed recoil loads, but I don't think they come in the larger shot sizes like sixes.
https://www.bandpusa.com/Shopping/index.php?cPath=65_67
