Results are in: 3 - 3 shot groups each from Benneke, Rottweil, Remington, Winchester, Wolf and Federal. Groups fired from 50 yds off rest. Of the 6 brands, the Rottweil slugs weren't bad but the Federals with the tru-ball shot an avg of 3 1/2".
The only problem is that after over 50 rounds in one session with the 870, my shoulder is a might sore to say the least. Just thank God that they weren't 3" shells and only 2 3/4".