RCBS 17801 Full Length Die Set Group A 7mm RUM

Optimize Your 7mm RUM Reloading with the RCBS 17801 Full Length Die Set

For serious shooters and hunters who demand ultimate precision and cost-efficiency from their 7mm Remington Ultra Magnum (7mm RUM) ammunition, the path to superior performance often leads to handloading. But what are the essential tools for crafting exceptionally accurate, consistent, and reliable 7mm RUM cartridges? The answer lies in high-quality reloading dies, and the RCBS 17801 Full Length Die Set Group A for 7mm RUM stands out as a foundational component for any successful reloading bench.

This comprehensive die set is specifically engineered to bring your fired 7mm RUM brass back to factory specifications, ensuring reliable feeding, consistent chambering, and peak accuracy with every shot. Whether you're a long-range precision shooter, a dedicated big-game hunter, or simply someone looking to maximize the value and performance of your ammunition, this RCBS die set provides the critical tools you need to achieve your reloading goals.

Why Handload 7mm RUM and Why Choose Full Length Dies?

The 7mm RUM is a powerful, flat-shooting cartridge renowned for its long-range capabilities and impressive ballistic performance. However, factory ammunition for such specialized calibers can be expensive and may not always offer the precise characteristics needed for competitive shooting or ethical hunting at extended distances. Handloading empowers you to:

• Significantly reduce ammunition costs: Reusing spent brass and buying components in bulk can lead to substantial savings over time.
• Tailor loads for specific firearms: Optimize bullet weight, powder charge, and seating depth to unlock your rifle's true accuracy potential.
• Achieve superior accuracy and consistency: Handloaded ammunition, when done correctly, often surpasses factory equivalents in terms of precision and shot-to-shot consistency.
• Experiment with different components: Explore various bullet types (from varmint to heavy big-game), powders, and primers to find the perfect combination for your intended use.

When it comes to resizing fired brass, full length sizing is crucial, especially for high-pressure cartridges like the 7mm RUM. Fired brass expands and stretches, particularly at the shoulder and body. If not properly resized, it may not chamber reliably in your firearm, leading to malfunctions or even unsafe conditions. A full length die resizes the entire case back to its original dimensions, ensuring:

• Effortless chambering: Your reloaded rounds will slide smoothly into the chamber without resistance.
• Improved reliability: Eliminates issues like sticky extraction or rounds failing to fully seat.
• Extended brass life: Proper sizing helps prevent excessive brass stretching and fatigue, allowing for more reloads per case.
• Uniformity across all rounds: Critical for achieving consistent velocities and tight groups downrange.

For those who use their 7mm RUM rifles in multiple firearms, or when reloading brass that has been fired in different rifles, a full length die set is indispensable. It guarantees that the brass will fit and function flawlessly, regardless of which chamber it was originally fired from.

What's Included in the RCBS 17801 Full Length Die Set?

The RCBS 17801 Full Length Die Set for 7mm RUM (UPC: 076683178019) is a two-die set, comprising the essential tools for standard rifle cartridge reloading:

1. Full Length Sizer Die: This is the workhorse of the set. It performs several critical functions:
   • Resizes the entire case body and shoulder: Restores fired brass to factory dimensions, ensuring proper chambering.
   • Decaps the spent primer: Removes the old primer in preparation for a new one.
   • Expands the case neck: A decapping-expander ball passes through the neck, resizing and preparing it for bullet seating. This is vital for consistent neck tension, which directly impacts bullet pull and overall accuracy.
   • Venturi design: RCBS sizer dies often feature a polished taper on the expander button, a "Venturi" design, which guides the case into the die mouth. This reduces resistance and stress on the brass during the resizing process, contributing to longer case life and smoother operation.
   • Tapered expander-decapping unit: Facilitates smoother resizing and decapping, minimizing damage to cases.
2. Bullet Seater Die: This die is responsible for precisely seating the bullet into the prepared case neck and applying the correct crimp (if desired).
   • Seats bullets consistently: Designed to seat bullets straight and to a uniform depth, which is paramount for accuracy.
   • Built-in crimper: Allows for a roll crimp, which can be beneficial for specific applications, particularly in rifles that experience heavy recoil or when using tubular magazines. The crimp securely holds the bullet in place and can influence burn characteristics of the powder. However, for precision rifle applications, a minimal or no crimp is often preferred, and this die allows for that flexibility.
   • Micrometer adjustments (in some versions, or precise repeatable settings): While this standard set provides excellent precision, the design allows for easy and repeatable depth settings.

Both dies are constructed from hardened steel, precision machined to exacting tolerances, and polished to ensure smooth operation and minimal friction with your brass. The internal surfaces are often polished to a mirror-like finish, reducing drag and making resizing easier. This level of craftsmanship is what RCBS is known for and contributes directly to the consistency and quality of your reloaded ammunition.

The RCBS Advantage: Precision, Durability, and Reliability

When choosing reloading equipment, the brand matters. RCBS has been a leading name in the reloading industry for decades, known for producing tools that are not only highly effective but also exceptionally durable. The RCBS 17801 Full Length Die Set embodies this commitment to quality:

• Premium Materials: Constructed from heat-treated, high-quality steel, these dies are built to withstand the rigorous demands of repeated resizing and seating, ensuring a lifetime of use.
• Precision Machining: Each die is precisely machined to ensure exact tolerances, which translates directly into uniform case dimensions and consistent ammunition. This meticulous manufacturing process is crucial for achieving sub-MOA accuracy.
• Smooth Operation: The internal surfaces are polished to reduce friction, making the resizing process smoother and reducing stress on your brass and press.
• User-Friendly Design: RCBS dies are designed for ease of setup and adjustment, making them suitable for both experienced reloaders and those new to the craft. The standard 7/8"-14 thread size makes them compatible with virtually all major reloading presses.
• Proven Performance: RCBS dies are trusted by competitive shooters, professional gunsmiths, and serious hunters worldwide, a testament to their reliability and the quality of the ammunition they produce.
• Long-Term Investment: Investing in a high-quality die set like the RCBS 17801 means you’re acquiring tools that will consistently produce high-quality ammunition for years to come, paying for themselves many times over in ammunition savings and improved shooting results.

Who Benefits Most from the RCBS 17801 Die Set?

This die set is an indispensable tool for a variety of 7mm RUM enthusiasts:

• The Precision Shooter: For those chasing tiny groups at long distances, consistency in ammunition is non-negotiable. This die set provides the foundation for uniform case preparation, crucial for maintaining tight shot-to-shot consistency.
• The Dedicated Hunter: Ensuring reliable feeding and maximum accuracy for a critical shot on big game demands meticulously crafted ammunition. The RCBS full length dies help achieve that reliability and precision.
• The Cost-Conscious Shooter: Tired of the high price of factory 7mm RUM ammunition? This die set is your gateway to significant savings, allowing you to shoot more for less.
• The Experimenter: If you enjoy tinkering with different loads to find the "sweet spot" for your rifle, these dies provide the consistent baseline needed to accurately assess various powder and bullet combinations.
• Anyone concerned with firearm longevity and safety: Properly sized brass prevents undue stress on your firearm's action, contributing to its longevity and safe operation.

Setting Up and Using Your RCBS Dies: A Quick Overview

While detailed instructions are provided with the die set, here’s a general guide to integrating the RCBS 17801 into your reloading process:

1. Mounting the Sizer Die: Securely thread the full length sizer die into your reloading press. Adjust it until the shell holder just touches the bottom of the die, then give it a slight turn further (e.g., 1/8 to 1/4 turn) to ensure proper "cam over" for consistent full length sizing, especially for rimless cartridges like the 7mm RUM.
2. Lubrication: Proper case lubrication is absolutely critical when full length resizing, especially for bottleneck rifle cases. Apply a thin, even coat of case lubricant to the exterior of your cleaned brass. This prevents cases from sticking in the die.
3. Resizing and Decapping: Insert a lubricated, fired 7mm RUM case into the shell holder. Raise the ram to push the case into the sizer die. As the case enters, the expander-decapping rod will decape the old primer and expand the neck. As the case is withdrawn, it will be fully resized.
4. Cleaning and Priming: After sizing, clean off the case lubricant. Inspect cases for damage. Now your cases are ready for priming with a new large rifle magnum primer.
5. Mounting the Seater Die: Thread the seater die into your press. With a primed, uncharged case in the shell holder, raise the ram fully. Thread the die down until it makes contact with the case mouth, then back off slightly. This is your starting point for seating depth.
6. Seating Bullets: Place a bullet on the case mouth. Slowly raise the ram, guiding the bullet into the die. Adjust the seating stem (the top part of the die) in small increments until you reach your desired Overall Length (OAL). This OAL is critical for accuracy and must be safe for your rifle's chamber.
7. Crimping (Optional): If you desire a crimp, adjust the die body down slightly to apply a roll crimp. Always proceed with caution and consult reputable reloading manuals for appropriate crimp levels for your specific components.

Always refer to your RCBS instructions and a reputable reloading manual (like those from Hodgdon, Speer, Hornady, Nosler, or Sierra) for specific load data and safety procedures for the 7mm RUM. Safety is paramount in reloading.

Where to Acquire Your RCBS 17801 Full Length Die Set

Ready to elevate your 7mm RUM reloading experience? The RCBS 17801 Full Length Die Set Group A for 7mm RUM is an essential investment for any serious reloader. This high-quality die set, along with a wide range of other essential reloading supplies and components, is readily available at DEGuns. As a trusted retailer, DEGuns offers a comprehensive selection of reloading equipment to help you achieve consistent, accurate, and cost-effective ammunition production for your 7mm RUM and beyond. Visit deguns.com to explore the full lineup of RCBS products and start your journey towards ultimate reloading precision.

By integrating the RCBS 17801 Full Length Die Set into your reloading workflow, you are not just buying tools; you are investing in precision, consistency, and the sheer satisfaction of crafting your own high-performance 7mm RUM ammunition. Experience the difference that quality RCBS dies make on your bench and downrange.

RCBS 17801 Full Length Die Set Specifications