You might not like this response but I would suggest you go drop $70+ and buy one box of every saboted slug you can find from the different manufacturers. Slug guns are like rifles and they will "like" one brand over another. You won't know which one it is until you shoot it. My friend and I had the same Mossberg 695 and his liked Lightfields while mine like Federal. My Encore likes the Winchester Partition Golds. It figures since they are $15 a box and kick like a mule but I get 2-1/2" groups at 100 yards.
Good luck.