HORNADY 546309 7MM SAUM FULL LENGTH 2 DIE SET

The Hornady Custom Grade New Dimension 2-Die Set (546309) is a full length reloading die set chambered for 7mm Remington Short Action Ultra Magnum, built for rifle reloaders who handload the compact high-velocity 7mm SAUM cartridge and want precision sizing, consistent bullet seating, and a lifetime-warranted American-made die set optimized for the demands of short action ultra magnum brass.

Key Features

• Part number: 546309
• Cartridge: 7mm Remington Short Action Ultra Magnum (.284 diameter)
• Die set type: full length Series III 2-die set
• Dies included: full length sizing die with Elliptical Expander and Zip Spindle, inline bullet seating die with floating alignment sleeve and built-in crimper
• Threads: 7/8 inch by 14, fits all standard reloading presses
• Sure-Loc locking rings: two included
• Storage box: stackable die storage box included
• Shell holder: sold separately
• Warranty: Hornady no-risk lifetime warranty
• Country of origin: United States

Special Features

• The Elliptical Expander delivers smoother neck sizing than standard ball expanders, reducing friction and case neck stretch on 7mm SAUM brass across multiple reloading cycles.
• The Zip Spindle uses a series of light threads on both the spindle and collet to positively eliminate slippage, making incremental seating depth adjustments fast and repeatable without heavy lock-down force.
• The inline floating alignment sleeve in the seating die holds the bullet, case neck, and seating stem in perfect alignment before the bullet enters the case neck, reducing runout and improving concentricity round to round.
• The built-in roll crimp in the seating die secures the bullet without a separate crimping die or extra press pass, saving a station on turret and progressive presses.
• Sure-Loc rings clamp around the entire die body under constant pressure, protecting die threads and holding position reliably through long loading sessions.

Practical Benefits

• Full length sizing returns cases to SAAMI minimum dimensions, making these dies the correct choice for bolt rifles running mixed SAUM brass and for any shooter not dedicating cases to a single chamber.
• The 7mm SAUM delivers high-velocity 7mm performance from a compact short-action case, making it ideal for deer, elk, and open-country big game hunting where a lighter, shorter rifle with magnum-level performance is the priority, and handloads built on this die set let you get the most from that case capacity.
• The 7/8 by 14 thread fits virtually every single-stage, turret, and progressive press on the market, making this a direct addition to your existing bench without adapters.
• The Elliptical Expander and inline seating system work together to reduce velocity spread and concentricity variation that show up as vertical dispersion at the distances where the 7mm SAUM is most often pushed.
• If you load for a 7mm SAUM and want dies that deliver consistent, accurate results without compromise, the Hornady Custom Grade 2-Die Set (546309) gives you that reliability with a lifetime guarantee behind it.

The Hornady Custom Grade New Dimension 2-Die Set (546309) for 7mm Remington Short Action Ultra Magnum is a smart addition for big game hunters and rifle reloaders who want consistent full length sizing, extended brass life, and American-made durability in a standard press-compatible package.