Yes the Accutips. The old man shoots the 2 3/4s, they are slower then the SSTs (1800ish if I remember right) not sure about the 3in. Far as pass thrus thats a whole nother argument. IMO a pass thru = bad. I want that deer to take the full impact of the slug and all the hydrallic(spelling isnt one of my finer points) shock. I love the Lightfield slugs, they seem to shoot good in most rifled barrels and hit like a truck but drop like rocks past 100yds. The old Winchester Hi-impacts were great slugs, especially if you like pass thrus. Anyone have any experience with the Barnes ballistic tips?