RCBS 17701 Full-Length Die Set for .338 Remington Ultra Magnum

The RCBS 17701 Full-Length Die Set is designed for reloading .338 Remington Ultra Magnum bottleneck cases. This two-die set includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a Bullet Seater Plug. Together, these components provide essential case preparation and bullet seating functions for reliable, consistent ammunition 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 release trapped air and excess case lubricant, helping reduce the risk of case damage during sizing. The die also maintains headspace within minimum tolerances to help avoid unnecessary changes to the case body length during full-length sizing.
The included Seater Die features an integrated roll crimper that secures the bullet as it is seated. This design streamlines the reloading process by combining bullet seating and crimping in one operation. As part of the RCBS Full Length Die Series, part number 17701 is suited for reloaders who need a dedicated die set for .338 RUM applications. Use with compatible reloading equipment and follow established loading data and safe reloading practices.

Features:

• Type: Full Length Die Set

• Caliber: .338 Remington Ultra Magnum

• Die Type: Sizer and Seater

• Die Series: Full Length

• Set Contents: Two dies

• Sizer Die: Sizes cases, removes spent primers, and expands case necks

• Headspace Control: Maintains headspace to minimum tolerances during full-length sizing

• Case Protection: Vents help release trapped air and excess lubricant

• Seater Die: Includes a bullet seater plug and built-in roll crimper

• Brand: RCBS

• Part Number: 17701