I use a 300gr Barnes Expander MZ in a black Harvestor Crushed Rib sabot, 2 50gr Pyrodex pellets, and a Winchester W209 primer. Before firing I clean with a alcohol patch (both sides) to remove the oil in my barrel, then a dry patch. Pop 3 primers (just my way of doing things) and load up. Shots 1,3, and 5 in the top group on a barrel swabbed between shots. Shots 2,4 and 6 in the center just loading up a follow up shot. These were at 100 yards.