I was wondering if anyone had some suggestions for a slug for a cylinder bore...I would believe the slug that matched the bore the closed would be the most accurate....I tried some winchester slugs today and about the best i could get was 4-5" at 50 yards....I was really hoping for 2-3" at the same range...Would the new federal with the plastic ball in the base be more accurate, or maybe the Brennke??? Any suggestions would be greatly appreciated...