The patented design rapidly became recognized as the "state of the art" in straight-line bullet seaters, effectively addressing the concentricity issues present in all other seating dies of this category. The floating seating stem system's detailed engineering enabled tighter manufacturing tolerances. The fit between the bullet guide and the seating stem is so precise that the seating stem can demonstrably float on a column of air. The seating stem is precision-ground to precisely match the bullet diameter.