HORNADY 546307 7MM REM ULTRA MAG FULL LENGTH 2 DIE SET

The Hornady Custom Grade New Dimension 2-Die Set (546307) is a full length reloading die set chambered for 7mm Remington Ultra Magnum, built for rifle reloaders who handload one of the most powerful and flat-shooting 7mm cartridges ever produced and want precision sizing, consistent bullet seating, and a lifetime-warranted American-made die set built to handle the demands of large-capacity RUM brass.

Key Features

• Part number: 546307
• Cartridge: 7mm Remington 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 the large-body RUM brass that reloaders depend on across multiple loading cycles.
• The Zip Spindle uses a series of light threads on both the spindle and collet to positively eliminate slippage, making 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 the concentricity that matters at the extreme distances the 7mm RUM is built for.
• The built-in roll crimp in the seating die secures the bullet without a separate crimping die or extra press pass.
• 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 RUM brass and for any shooter not dedicating cases to a single chamber.
• The 7mm Remington Ultra Magnum pushes .284 caliber bullets to extreme velocities from a rebated rim case designed to maximize powder capacity, making it ideal for long-range elk, moose, and big game hunting where maximum energy retention at distance is the priority, and handloads built on this die set let you extract the full capability of that case.
• 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 extended ranges where the 7mm RUM earns its reputation.
• If you handload for a 7mm Remington Ultra Magnum and want dies built to match the performance demands of that cartridge, the Hornady Custom Grade 2-Die Set (546307) delivers that precision with a lifetime guarantee behind it.

The Hornady Custom Grade New Dimension 2-Die Set (546307) for 7mm Remington Ultra Magnum is a capable tool for serious big game hunters and rifle reloaders who want consistent full length sizing, reduced large-capacity brass stretch, and American-made durability in a standard press-compatible package.