Well, I guess nobody actually tested them. Maybe I'm the only one dumb enough to spend an afternoon searching for the most accurate effective slug. Accuracy in itself is a hobby you know
I thought I had a miracle combo when my old smooth 20 inch 870 fell in love with Fed truballs. 1 3/4 largest group at 50 yards. That is many groups. At 100 though, it will not stay within the 4 inches mentioned, or five consistently for that matter. Please tell what gun and load combination is giving that accuracy at and beyond 100 yards. My 1 oz standard Foster type slugs are v e r r y slow by 100 yards, and dropping like rocks.
If i find some of the new win sabots I'll try five in my rifled barrel and report. I was really hoping I wasn't the only one who does that