Redding Reloading 6MM Dasher Competition Seating Die Steel Small. Tighter manufacturing tolerances were made possible due to the details of the floating seating stem system. The bullet guide to seating stem fit is so precise that the seating stem can actually be demonstrated to float on a column of air. The seating stem is precision ground to exactly match the bullet diameter. Package Contents: Redding Reloading Competition Seating Die for Bottleneck Redding Reloading 55648: 6MM Dasher Competition Seating Die Steel Small