RCBS 17801 Full-Length Die Set for 7mm RUM

The RCBS 17801 Full-Length Die Set is designed for reloading 7mm Remington Ultra Magnum, also known as 7mm RUM, bottleneck cartridge 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 dies provide the essential sizing, depriming, neck expansion, bullet seating, and crimping functions needed for reliable ammunition preparation.
The Full-Length Sizer Die returns cases to SAAMI minimum cartridge dimensions while sizing the outside of the case, removing spent primers, and expanding the neck to accept a new bullet. Its vented design helps reduce the risk of case damage caused by trapped air or excessive case lubricant. Carefully controlled headspace tolerances help minimize changes to case body length during full-length sizing, supporting consistent chambering and dependable performance.
The included Seater Die features an integrated roll crimper that secures the bullet as it is seated. This convenient design helps streamline the reloading process while providing consistent bullet seating and a firm case mouth crimp when appropriate for the load. Built for reloaders working with 7mm RUM ammunition, the RCBS 17801 die set combines practical functionality with the precision associated with RCBS reloading equipment.

Features:

• Type: Full-Length Die Set

• Caliber: 7mm RUM

• Die Type: Sizer and Seater

• Die Series: Full Length

• Set Contents: Two dies

• Full-Length Sizer Die: Sizes the case, deprimes, and expands the neck

• Expander-Decapping Unit: Prepares the case for bullet seating

• Vented Design: Helps prevent case damage from trapped air and excess lubricant

• Headspace Control: Maintains close tolerances during full-length sizing

• Seater Die: Seats bullets and includes an integrated roll crimper