Let’s Dive into RCBS Exp-Decapping Units
Reloading ammunition is a craft, a science, and sometimes, a frustrating exercise. The RCBS Exp-Decapping Units are a crucial component in this process, promising to streamline the de-priming and case neck expansion stages. RCBS, a name synonymous with quality reloading equipment, offers these as replacement parts, intended to keep your reloading sessions running smoothly. They boast precision machining and are made in the USA.
My foray into reloading started as a way to improve the accuracy and consistency of my ammunition for long-range shooting competitions. After a particularly frustrating session where a broken decapping pin brought everything to a halt, I realized the importance of having spare parts on hand. That’s when I started researching the RCBS Exp-Decapping Units.
Upon receiving the RCBS Exp-Decapping Unit, I was immediately struck by the simplicity of its design. The expander rod, expander ball, and decapping pin looked robust and well-made, fitting the RCBS reputation. It felt solid in hand, promising a good fit and function within my existing RCBS sizing die.
Compared to universal decapping dies, the RCBS Exp-Decapping Unit offered a more integrated solution, working directly within the sizing die. I picked it over a dedicated Lee decapper because of RCBS‘s reputation for quality and precision, hoping for a smoother and more consistent operation. I was also considering a Hornady unit, but the price point of the RCBS Exp-Decapping Unit was more appealing for a replacement part.
Initially, I was cautiously optimistic. While the build quality seemed good, the user feedback I saw online mentioned potential issues with the decapping pin being brittle. I hoped that my experience would be better and that the RCBS Exp-Decapping Unit would live up to the RCBS name.
Real-World Testing: Putting RCBS Exp-Decapping Units to the Test
First Use Experience
My first test of the RCBS Exp-Decapping Unit was during a batch reloading session for my .308 Winchester rifle. The goal was to prepare ammunition for an upcoming precision rifle match. I used it in conjunction with my RCBS full-length sizing die on a variety of brass, including once-fired military surplus and commercially manufactured cases.
The unit performed well initially, smoothly de-priming and expanding the case necks. I was working in a well-lit and organized reloading room. However, after about 50 cases, I encountered my first snag: a particularly stubborn primer in a military surplus case.
While attempting to de-prime it, the decapping pin started to bend slightly. I managed to remove the primer, but the experience highlighted the fragility of the pin. This confirmed some of the negative feedback I had read.
Extended Use & Reliability
After several weeks of using the RCBS Exp-Decapping Unit, I’ve learned to exercise caution, especially with military surplus brass. I’ve processed several hundred cases, including .223 Remington and 6.5 Creedmoor, with varying degrees of success. The key is to apply consistent, even pressure and to inspect each case carefully for crimped primers, which require swaging before reloading.
The durability of the decapping pin remains a concern. I’ve already ordered a replacement pin just to have on hand. The unit itself shows no significant wear and tear, and the expander ball maintains its smooth finish.
Compared to my previous experience with a universal decapping die, the RCBS Exp-Decapping Unit is generally faster and more convenient when it works. But the risk of bending or breaking the decapping pin makes me hesitant to fully trust it with difficult cases. It doesn’t significantly outperform other options, especially considering the fragility of the pin.
Breaking Down the Features of RCBS Exp-Decapping Units
Specifications
The RCBS Exp-Decapping Units are designed as factory replacement parts for RCBS sizing dies. They consist of three primary components: the expander rod, the expander ball, and the decapping pin. The Manufacturer is, of course, RCBS.
- Material: Precision Machined – This suggests a focus on accuracy and consistency in dimensions.
- Color: Silver – This is purely aesthetic and doesn’t impact functionality.
- Quantity: 1 – Each unit is sold individually.
- Condition: New – Guarantees that the unit is free from prior use or defects.
- Country of Origin: USA – This may appeal to customers who prefer products manufactured in the United States.
These specifications are important because they directly influence the unit’s performance and longevity. Precision machining ensures concentricity, leading to more accurate and consistent ammunition. The “Made in USA” tag can also indicate higher quality control standards.
Performance & Functionality
The RCBS Exp-Decapping Units are designed to de-prime cases and expand the case neck in bottleneck cartridges. The expander ball ensures that the neck is properly sized to accept a bullet. When functioning properly, it streamlines the reloading process.
The unit’s primary strength lies in its integration with the sizing die. This eliminates the need for a separate decapping step. However, the decapping pin’s fragility is a significant weakness. It can bend or break when encountering stiff primers or crimped military brass.
The RCBS Exp-Decapping Unit meets expectations for simple, straightforward cases. However, it falls short when dealing with more challenging brass.
Design & Ergonomics
The RCBS Exp-Decapping Unit features a simple, functional design. It is easy to install and adjust within the sizing die. The unit is made of machined steel, providing adequate weight and strength.
The unit is user-friendly but requires some experience in reloading. Novice reloaders may inadvertently damage the decapping pin if they are not careful.
Durability & Maintenance
The main body of the RCBS Exp-Decapping Unit seems durable and should last for many years with proper care. However, the decapping pin is a wear item and will likely need to be replaced periodically. Especially if you reload a lot of military surplus brass.
Maintenance involves keeping the unit clean and lightly lubricated. Replacement decapping pins are readily available from RCBS and other reloading suppliers.
Accessories and Customization Options
The RCBS Exp-Decapping Unit comes as a standalone unit, with no additional accessories included. There are no significant customization options available for the unit itself.
It is compatible with standard RCBS sizing dies and shell holders. Decapping pins from other brands may also fit, but compatibility should be verified before use. I recommend having extra decapping pins on hand.
Pros and Cons of RCBS Exp-Decapping Units
Pros
- Factory Replacement Part – Ensures compatibility with RCBS sizing dies.
- Precision Machined – Provides accurate and consistent performance.
- Expander Rod and Ball – Streamlines case neck expansion.
- Relatively Inexpensive – Compared to dedicated decapping dies.
- Easy to Install and Adjust – Simple design for quick setup.
Cons
- Fragile Decapping Pin – Prone to bending or breaking, especially with crimped primers.
- Not Ideal for Military Brass – Requires extra care and potentially swaging.
- Limited Customization Options – No significant upgrades available.
Who Should Buy RCBS Exp-Decapping Units?
The RCBS Exp-Decapping Units are perfect for reloaders who primarily work with commercially manufactured brass and need a convenient replacement part for their RCBS sizing dies. It’s also suitable for reloaders who are meticulous and exercise caution when de-priming.
This product should be avoided by reloaders who primarily use military surplus brass or who are new to reloading. These reloaders might be better served by a more robust decapping solution.
A must-have accessory is a supply of replacement decapping pins. I also recommend a case mouth chamfer and deburring tool.
Conclusion on RCBS Exp-Decapping Units
The RCBS Exp-Decapping Units offer a convenient and affordable solution for de-priming and expanding case necks during reloading. However, the fragility of the decapping pin is a significant drawback. This limits its usefulness with certain types of brass.
At a price of $7.49, the RCBS Exp-Decapping Unit is reasonably priced as a replacement part. However, the cost of replacement decapping pins can add up over time.
I would cautiously recommend the RCBS Exp-Decapping Unit to reloaders who understand its limitations and are willing to exercise caution. A more robust decapping solution might be a better investment for those who frequently reload military surplus brass. Always be prepared to replace the decapping pin.