The Hornady Custom Grade New Dimension Series IV Rifle 2-Die Set for .338/.378 Weatherby Magnum (Hornady part no. 546391) brings match-grade construction to this big-bore rifle cartridge, combining Series IV’s core fit-and-finish upgrades in one two-die box. The set skips a separate expander die and crimping die by building both functions into the sizer and seater dies themselves, while a spindle-lock design and sliding alignment sleeve keep the case straight through sizing and seating. All dies are hand-inspected and heat-treated for consistent hardness and finish.

Key Specifications

• Slippage-eliminating Zip-Spindle design gives a perfectly aligned fit with easy spindle-lock tightening.
• A sliding alignment sleeve holds the case neck and seating stem in place for straight bullet seating.
• The polished elliptical expander releases smoothly from case necks, eliminating the need for a separate expander die.
• A wear-reducing all-steel seater adjustment screw with a compression washer allows fine seating depth adjustments.
• A retainer ring makes the die easy to clean.
• Sure-Loc rings make fine-tuning die adjustments fast and repeatable.
• A sturdy steel decapper removes the spent primer during sizing.
• A built-in crimper lets you crimp the bullet without adding a separate crimping die.
• All dies are hand-inspected and heat-treated for consistent hardness and finish.

Frequently Asked Questions

Does this set need a separate expander die? No, the polished elliptical expander built into the sizing die eliminates the need for a separate expander die.

Can I crimp with this die set? Yes, the seating die includes a built-in crimper, so no separate crimping die is required.

What does the Zip-Spindle design do? It eliminates spindle slippage and makes the spindle lock easy to tighten by hand, so seating depth adjustments stay put.

Buy the Hornady Custom Grade New Dimension Series IV 2-Die Set, .338/.378 Weatherby

Bring match-grade fit and finish to your .338/.378 Weatherby Magnum reloading with this Series IV 2-die set. Order it from our Lubbock, Texas gun shop, where our reloading dies selection stocks Hornady Custom Grade dies for big-bore magnum cartridges, with fast shipping to your door.