Reloaders chambering .300 RUM get a complete three-die setup in the Redding .300 RUM Series A Deluxe 3-Die Set (Redding part no. 84288) from Redding, built on the same full-length sizer and seater found in Redding’s standard sets with a dedicated neck-sizing die added in. Redding hand-polishes every die after heat treatment and ultrasonically cleans them before packaging, and the dies thread onto the industry-standard 7/8-14 pattern that fits virtually any press on the market. The die box itself doubles as a loading block and includes a spare decapping pin, hex wrench, and a slot for your shell holder. It is a thorough, well-equipped way to start reloading .300 RUM.

Key Specifications

• A three-die Deluxe set for the .300 RUM cartridge: full-length sizer, dedicated neck-sizing die, and bullet seater.
• The neck-sizing die resizes only the case neck, preserving the fire-formed body fit for brass already shot in your own chamber.
• The full-length sizer die brings brass back to SAAMI-spec dimensions whenever full resizing is needed, such as for once-fired brass from another rifle.
• The seater die seats bullets to a consistent, repeatable depth for uniform .300 RUM handloads.
• All dies use the industry-standard 7/8-14 thread, so the set fits virtually any single-stage or turret press.
• Redding heat-treats every die in an atmospherically controlled furnace, then hand-polishes it for smooth, scratch-free case travel.
• The die box doubles as a loading block and includes a spare decapping pin and hex wrench.

Frequently Asked Questions

What is included in this set? A full-length sizer die, a neck-sizing die, and a seater die, all cut for .300 RUM.

Why would I want a separate neck-sizing die? It lets you resize just the case neck on brass already fire-formed to your chamber, which extends case life compared to full-length sizing every time.

Will this set fit my press? Yes. Every die threads onto the industry-standard 7/8-14 pattern used by nearly all reloading presses.

Buy the Redding .300 RUM Series A Deluxe 3-Die Set

Add neck-sizing control to your .300 RUM handloads with this Redding Deluxe set. Order it through our Lubbock, Texas gun shop, and check out the rest of our reloading dies selection, shipped fast and insured.