Lyman Pro 4-Die Pack Features The Lyman Pro 4-Die Pack is engineered specifically for the high volume demands of Mark 7 progressive presses though it performs equally well on standard progressive turret and single station presses. Every die in the set is constructed from stainless steel a material chosen for its toughness and resistance to corrosion across years of repeated reloading cycles. The sizing die is equipped with a highly polished carbide ring that delivers the ultimate in wear resistance while reducing the force required to size cases. A spring-loaded decapping rod system ensures primers are forcefully and reliably ejected from the primer pocket on every cycle. This set includes Lyman s famous M die neck expander which uses a two-step expander plug to deliver just the right amount of neck tension and case mouth flare for consistent bullet seating. The Micrometer Seating die features a micrometer adjustable seating head for precision bullet seating length and its floating bullet seating punch centers the bullet to minimize excessive runout. A taper crimp die rounds out the four-die set fully removing case mouth flare and improving bullet retention for a finished reliable cartridge. This Lyman Pro 4-Die Pack is matched to the 8.6 Blackout cartridge at a .338 inch bullet diameter for reloaders working with this chambering. Lyman Pro 4-Die Pack Specifications Manufacturer: Lyman Reloading Caliber: 8.6 Blackout Reloading Diameter: .338 Reloading Die Type: 4-Die Set Material: Stainless Steel Available At: GrabAGun