RCBS Full Length 2 Die Set .257 Roberts

• Full-length sizing for reliable chambering: The sizing die returns fired brass to SAAMI-minimum dimensions, which helps cartridges feed and chamber consistently in hunting and general-purpose rifle loads.
• Two-die set for complete case prep and seating: With a full-length sizer and a bullet seating die in one box, the set covers the core steps needed to build repeatable bottleneck rifle ammunition.
• Built-in roll crimp capability: The seater die can apply a roll crimp as the bullet is seated, helping maintain bullet retention in loads that may see recoil, field carry, or repeated chambering.
• Standard 7/8"-14 thread compatibility: The dies fit the common press thread standard, making them easy to use with a wide range of single-stage and progressive reloading presses.
• Steel die construction made in the USA: Steel construction supports long service life and consistent sizing performance, while domestic manufacture reflects RCBS’s established focus on reloading tools.

About the Full Length 2 Die Set Series

RCBS Full Length 2 Die Sets are traditional rifle reloading die sets built for handloaders who want a straightforward, durable setup for bottleneck cartridges. In the RCBS lineup, they sit as the brand’s core full-length sizing option, aimed at reloaders who prioritize dependable chambering, repeatable ammunition dimensions, and broad press compatibility over specialized match-style adjustments. The series is widely used for hunting ammunition, general range loads, and practical rifle reloading where brass may be fired in more than one rifle or where smooth feeding matters as much as raw precision.

These sets typically pair a full-length sizing die with expander-decapping unit and a bullet seating die with built-in crimp capability. The design philosophy is simple: robust steel dies, standard setup procedures, and dimensions held closely enough to support consistent ammunition assembly without unnecessary complexity. For reloaders working with bottleneck rifle cases, that makes the series a sensible choice for routine brass processing, bullet seating, and crimping in one compact kit. Across the range, the emphasis stays on practical function, long-term durability, and compatibility with standard 7/8"-14 presses used across the reloading market.

About the RCBS Full Length 2 Die Set .257 Roberts

The RCBS Full Length 2 Die Set .257 Roberts is configured for reloaders building ammunition for a classic bottleneck rifle cartridge and wanting a conventional, reliable die arrangement. Its 2 die set format combines the essential operations of full length sizing, decapping, bullet seating, and roll crimping, so it suits both first-time setup and regular batch loading. Full-length sizing is especially useful when ammunition must chamber without hesitation in hunting rifles or in rifles that may not be firing the same brass every time, because it restores the case body and neck to dimensions intended for dependable fit.

The steel sizing die is designed for repeated use and standard adjustment, which keeps setup familiar for reloaders already working with conventional presses. The seating die adds flexibility by allowing bullet seating depth adjustment while also providing roll crimp capability when the load calls for it. In practice, that helps produce ammunition that stands up better to recoil and handling, particularly for field loads carried in magazines or cycled more than once. Standard 7/8"-14 thread compatibility means the set integrates easily into common reloading benches without special adapters, and the bottle neck case design focus keeps the dies matched to the needs of rifle brass rather than straight-wall pistol loading. For the handloader who wants dependable function and a familiar workflow, this set stays close to the established RCBS approach.

About RCBS

RCBS was founded in 1943 by Fred T. Huntington in Oroville, California. The company name came from Rock Chuck Bullet Swage, the original bullet-swaging die that started the business. From those beginnings, RCBS developed into a specialist in ammunition handloading equipment, with a product range that includes presses, dies, shell holders, powder measures, and priming tools.

RCBS is based in Oroville, California and remains closely associated with reloading tools for both rifle and pistol cartridges. Its lineup spans single-stage, turret, and progressive presses, reflecting a long focus on practical tools for everyone from occasional handloaders to high-volume reloaders. The brand became part of Hodgdon Powder Company in 2024, adding another established name in the shooting and reloading field to its ownership history.

Main Features

• Manufacturer: RCBS
• Made in: USA
• Pack size: 2 die set
• Die operation: Bullet seating, Decapping, Full length sizing, Roll Crimp
• Case body design: Bottle neck
• Case type: Rifle
• Sizing die material: Steel
• Adjustment: Standard
• Press compatibility: Standard 7/8"-14 thread
• Bullet diameter: 5.69 mm / 224.00 inch

Warranty

2 years. This die set is covered by a two-year warranty period.

In the Box

• Full-length sizing die
• Bullet seating die
• Green die box