RCBS 17601 Full Length Die Set for 300 Remington Ultra Magnum Reloading

The RCBS 17601 full length die set for 300 Remington Ultra Magnum gives handloaders the essential tools needed to resize and seat ammunition for this powerful magnum rifle cartridge. Whether you're loading for a long-range hunting rifle or a precision target build, this two-die set handles the core operations that transform fired cases into safe, consistent ammunition. Built to RCBS's exacting standards, it's designed for shooters who take reloading seriously and want reliable, repeatable results.

The full-length sizer die does the heavy lifting: it resizes fired cases to SAAMI minimum dimensions, removes the spent primer, and opens the neck to accept a fresh bullet. The die incorporates vents that protect your cases by preventing air pressure buildup and managing excess lubricant during the resizing stroke. Headspace is held to tight tolerances so the case body length stays consistent, which matters when you're chasing accuracy. The included seater die handles bullet seating and features a built-in roll crimper that applies a uniform, secure crimp at the same time the bullet is seated.

For 300 RUM handloaders, this set removes guesswork from two critical steps in the reloading sequence. It's the kind of no-nonsense tool that appeals to hunters and range shooters who understand that ammunition quality directly affects field or target performance. Pair it with your press, case prep station, and other reloading gear to build ammunition tailored to your rifle's chamber and your shooting goals.

Key Features

• Full-length sizer die with expander-decapping unit for bottleneck cartridges
• Seater die with built-in roll crimper for simultaneous seating and crimping
• Vented die design prevents case damage from trapped air and excess lubricant
• Headspace set to SAAMI minimum tolerances for consistent case length
• Engineered for 300 Remington Ultra Magnum ammunition reloading

Specifications

Frequently Asked Questions

What does the RCBS 17601 die set include?

The set includes two dies: a full-length sizer die with an integrated expander-decapping unit, and a seater die with a built-in bullet seater plug and roll crimper. Together they handle resizing, de-priming, neck expansion, and bullet seating with crimping in one comprehensive package.

Is this die set compatible with all 300 Remington Ultra Magnum rifles?

This die set is manufactured to SAAMI minimum specifications for the 300 RUM cartridge and will work with standard 300 RUM chamber rifles. If your rifle has a custom or wildcat chamber, verify compatibility with the manufacturer.

What press do I need to use this die set?

The RCBS 17601 is designed for use with reloading presses that accept standard die threads. Check your press documentation to confirm it's compatible with full-length sizing and seating dies.

Does the set include case lube or decapping pins?

The facts provided do not specify whether case lubricant or replacement decapping pins are included. Check the detailed product packaging information or contact customer service for what's in the box beyond the two dies.