RCBS 12601 Full-Length Die Set for .257 Weatherby Magnum

The RCBS 12601 Full-Length Die Set is designed for reloading bottleneck cases in .257 Weatherby Magnum. This two-die set includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with Bullet Seater Plug, providing the essential tools for resizing, depriming, neck expansion, and bullet seating. It is suitable for reloaders who want consistent case preparation and dependable cartridge assembly.
The Full-Length Sizer Die returns cases to SAAMI minimum cartridge dimensions while sizing the outside of the case, removing the spent primer, and expanding the neck to accept a new bullet. Built-in vents help reduce the risk of case damage from trapped air or excessive lubricant. Carefully controlled headspace tolerances help prevent unwanted changes to case body length during full-length sizing, supporting reliable chambering and consistent reloading results.
The included Seater Die seats the bullet and features a built-in roll crimper to help secure the bullet during the same operation. This practical design streamlines the reloading process and helps produce uniform ammunition when used with properly prepared cases and compatible components. The RCBS 12601 set is a dedicated .257 Weatherby Magnum solution for reloaders seeking durable, precise, and straightforward full-length sizing and seating performance.

Features:

• Type: Full-Length Die Set

• Caliber: .257 Weatherby Magnum

• Die Type: Sizer and Seater

• Included Dies: Full-Length Sizer Die with Expander-Decapping Unit and Seater Die with Bullet Seater Plug

• Full-Length Sizing: Returns cases to SAAMI minimum cartridge dimensions

• Case Preparation: Sizes the case, removes spent primers, and expands the neck for bullet seating

• Vent Design: Helps prevent case damage caused by trapped air or excessive lubricant

• Headspace Control: Maintains minimum tolerances to help avoid changing case body length during sizing

• Crimping: Built-in roll crimper secures the bullet as it is seated