Lyman Pro 4-Die Pack for Mark 7 Press 8.6 Blackout

Lyman Pro 4-Die Pack for 8.6 Blackout

Lyman's Pro die sets represent a significant advancement in reloading die engineering. These precision tools are designed to deliver consistent, reliable performance whether you're running a high-volume Mark 7 press or a traditional single-station setup.

Construction and Materials

All sizing, seating, and crimping dies are machined from stainless steel—a material chosen specifically for its durability and resistance to corrosion. The sizing dies feature highly polished carbide rings that provide exceptional wear resistance and dramatically reduce the force required during the sizing stroke.

Key Features

Sizing Die

• Spring-loaded decapping rod system ensures forceful primer ejection
• Carbide sizing ring for reduced wear and sizing force
• Lyman's renowned M die neck expander with two-step expander plug
• Precise neck tension and case mouth flare control

Seating Die

• Micrometer-adjustable seating head for exact bullet seating depth
• Floating bullet seating punch centers bullets and minimizes run-out
• Engineered for consistent, repeatable results

Crimping Die

• Taper crimp design removes case mouth flare completely
• Improves bullet retention and overall cartridge integrity

Versatility

While optimized for high-volume reloading on the Mark 7 press, this die set performs equally well in progressive, turret, and single-station presses. The precision engineering ensures reliable performance across all reloading platforms.