The reamer I used of this gun has done 2 other guns and both were world record holders . This is a tight neck 222 , which mean the case is NEVER resized . You fire the gun , knock the primer out and put a new one in , add powder and seat new bullet in case and it is ready to be fired again . The chamber only let the neck expand .001 to release bullet and then it springs back to original specs to hold new bullet tight . The brass NEVER wears out . My brass held a world records in the 60's and 70's and this is the 3rd barrel it has been use in . The powder is meter straight into case , so no scale is ever used . There is 2 dies , one holds the brass square and knocks the primer out only and the other one hold the brass and bullet square for seating and controls seating depth too . It's a shame , but I will never get to shoot it again and the next guy who buys it will never know anything about it .