RCBS Lube-A-Matic Sizers Review

Putting the RCBS Lube-A-Matic Sizers to Work

For anyone deeply involved in reloading metallic cartridges, especially those favoring cast lead bullets, the sheer volume of bullets that need sizing and lubricating can quickly become a bottleneck. I found myself in this exact situation, staring at a growing pile of unsized, unlubed bullets after a particularly productive casting session. My established methods, while functional, were proving to be too time-consuming for the output I was aiming for. This led me to search for a more efficient, integrated solution that could handle both sizing and lubing in a single pass.

My initial impression of the RCBS Lube-A-Matic Sizers was one of understated utility. Machined from what feels like solid, durable steel, they exude a no-nonsense, workhorse quality. The heft and precise machining immediately conveyed a sense of reliability that is crucial in reloading equipment. I had considered some aftermarket sizing dies, but their lubrication capabilities were either non-existent or required a separate, often messy, process. The integrated nature of the RCBS system, however, promised a streamlined workflow.

Frankly, the prospect of a more efficient bullet processing system brought a significant sense of relief. The thought of reducing the time spent on this particular stage of reloading, without sacrificing accuracy or quality, was a welcome one.

Real-World Testing: Putting RCBS Lube-A-Matic Sizers to the Test

First Use Experience

My testing of the RCBS Lube-A-Matic Sizers took place on my dedicated reloading bench, a space that has seen its fair share of both triumphs and frustrations over the years. The primary scenario was processing batches of newly cast lead bullets, aiming to size them to specific jacketed bullet equivalents and simultaneously apply a quality bullet lubricant into the pre-formed grease grooves. This process was undertaken with a variety of lead alloys and a range of target diameters, from .30 caliber up to .45 caliber, to assess versatility.

The unit performed admirably under repeated use during a long afternoon of reloading. It handled consistent pressure from the sizing press without any sign of binding or deformation. Even when the ambient temperature in my workshop fluctuated, the lubricant flow remained consistent, a testament to the design.

Ease of use was a significant factor. After a quick read of the accompanying instructions, which were clear and concise, the process was remarkably intuitive. Loading the lubricant and then operating the sizing press became second nature within a few dozen bullets.

One minor surprise was the initial break-in period required for the lubricant to fully saturate the die. This is fairly common with new sizing dies, but it’s something to be aware of – a few bullets might show slightly less lube than subsequent ones. Beyond that, there were no significant issues or quirks, which is always a pleasant discovery when dealing with precision reloading components.

Extended Use & Reliability

After several months of consistent use, processing hundreds, if not thousands, of cast bullets, the RCBS Lube-A-Matic Sizers continue to perform with unwavering reliability. They have become an indispensable part of my reloading setup, significantly reducing the overall time and effort involved in preparing cast bullets for loading. The dies show no appreciable wear, maintaining their precise dimensions and the integrity of the lubricant channels.

Durability is clearly a strong suit. The precision-honed surfaces show no signs of scratching or abrasion, even after being subjected to numerous cycles through the sizing press and occasional gentle cleaning. The internal mechanism for delivering lubricant remains fluid and consistent, with no clogs or blockages reported to date.

Maintenance and care have been straightforward. A simple wipe-down with a clean cloth after use and an occasional light application of lubricant to the moving parts are all that have been required. Storing them in their original protective packaging when not in use ensures they remain free from dust and debris.

Compared to some older, single-stage sizing dies I’ve used in the past, these units are vastly superior. Budget-friendly options sometimes exhibit inconsistent sizing or struggle with lubricant distribution, but these RCBS sizers consistently deliver perfectly sized and lubed bullets, shot after shot. They have certainly set a high bar for future bullet processing tools.

Breaking Down the Features of RCBS Lube-A-Matic Sizers

Specifications

The RCBS Lube-A-Matic Sizers are designed to integrate seamlessly with the RCBS Lube-A-Matic Bullet Sizer/Lubricator. Each sizer die is precision-honed to an incredibly tight 0.0005-inch tolerance, ensuring accurate casting of lead bullets to the desired diameter. The primary function is to simultaneously size the bullet and apply a lubricant to its grease grooves.

This tight tolerance is critical for handloaders, as it guarantees that each bullet processed will be within very narrow diameter variations. Consistent sizing is paramount for accurate and reliable feeding in firearms, especially with cast bullets where slight variations can cause leading or poor accuracy. The integrated lubrication system means that this precision is achieved while also preparing the bullet for firing, preventing the common issues associated with dry cast bullets.

Performance & Functionality

The core function of these dies—sizing and lubing—is performed exceptionally well by the RCBS Lube-A-Matic Sizers. They accurately bring cast bullets to the exact diameter specified by the die, ensuring consistency across an entire batch. The lubrication is applied evenly into the bullet’s grease grooves, providing adequate protection against fouling in the bore.

• Strengths: The dual-action capability of sizing and lubing in a single press stroke is the standout feature, saving significant time. The precision sizing ensures excellent uniformity, which translates directly to improved shooting performance. The consistent lubricant application is also a major benefit, eliminating the need for separate lubing steps.
• Weaknesses: While highly effective, these dies are specific to the RCBS Lube-A-Matic system. They are not standalone sizing dies and require the dedicated lubricator base unit to function as intended. Also, the cost of the specialized lubricant for this system, while effective, can be a factor for some users.

Overall, the performance exceeds expectations for its intended purpose. It meets the demands of serious reloaders looking for efficiency and accuracy in their cast bullet preparation.

Design & Ergonomics

The design of these sizers is classic RCBS: functional, robust, and built to last. They are constructed from what appears to be high-quality steel, providing excellent durability and resistance to wear. The silver finish is classic and practical, indicating its metallic composition.

Ergonomically, the sizers are straightforward. They are designed to be screwed into the RCBS Lube-A-Matic lubricator base, a process that is simple and secure. Once installed, their operation is entirely dependent on the press, so direct ergonomic handling is minimal. However, the precise machining means they operate smoothly without requiring excessive force.

The lack of complex moving parts within the sizer die itself contributes to its ease of use and long-term reliability. The clear markings, typically indicating the caliber and size, are easy to read and help in quick selection.

Durability & Maintenance

The RCBS Lube-A-Matic Sizers are built with longevity in mind, typical of RCBS reloading dies. Under normal use, they are expected to last for many thousands of bullets, potentially a lifetime for many reloaders. The hardened steel construction and precision honing resist wear effectively, even with abrasive lead alloys.

Maintenance is minimal, primarily involving wiping down the die after use to remove any lead residue or lubricant. An occasional flush with a solvent designed for lead removal can help maintain optimal performance, but this is rarely needed if proper cleaning protocols are followed. The sizers are not designed to be disassembled by the user; their internal workings are sealed for the lubricant delivery system.

Potential failure points are very rare, but could include damage to the threads if overtightened or cross-threaded, or if the lubricant delivery ports become severely clogged due to improper lubricant use or storage. However, these are generally preventable with basic care.

Accessories and Customization Options

The RCBS Lube-A-Matic Sizers are designed as part of a system and do not typically come with additional accessories. Their primary “customization” comes from the variety of sizes available. Users select the specific sizer die that matches the desired bullet diameter for their firearm and cartridge.

These sizers are designed to work exclusively with the RCBS Lube-A-Matic Bullet Sizer/Lubricator. They are not compatible with generic sizing presses or other lubrication systems. This proprietary design ensures that the integrated sizing and lubing function works as intended, but it also means users are invested in the RCBS ecosystem for this specific task.

Pros and Cons of RCBS Lube-A-Matic Sizers

Who Should Buy RCBS Lube-A-Matic Sizers?

The RCBS Lube-A-Matic Sizers are an excellent choice for experienced handloaders who frequently work with cast lead bullets. This includes those participating in cast bullet silhouette shooting, long-range shooting with cast bullets, or any discipline where large quantities of cast bullets are processed. It is particularly beneficial for individuals seeking to streamline their reloading process and improve efficiency without compromising on quality.

Individuals who primarily shoot jacketed bullets, or who only cast a small number of lead bullets occasionally, might not find the investment in this system worthwhile. Those looking for a highly portable or simple, single-function sizing die would also be better served by alternatives.

For those who do opt for these sizers, ensuring you have the correct lubricant for your specific alloy and ambient temperature is crucial. Having a few different sizes available can also be beneficial if you load for multiple calibers or prefer different bullet diameters within a single caliber.

Conclusion on RCBS Lube-A-Matic Sizers

The RCBS Lube-A-Matic Sizers are a testament to efficient, high-quality reloading equipment. They deliver on their promise of accurately sizing and effectively lubricating cast lead bullets in a single, streamlined operation. The precision engineering and durable construction ensure reliable performance and longevity, making them a valuable addition to any serious cast bullet reloader’s bench.

Considering the time savings, accuracy improvements, and the robust build quality, the price is entirely justified. These sizers are not merely components; they are an investment in making the often-laborious task of bullet preparation significantly more manageable and productive.

I would wholeheartedly recommend these sizers to any handloader who has embraced the world of cast bullets and is looking to optimize their reloading workflow. If you’re tired of the tedious separation of sizing and lubing, this RCBS system offers a superior solution that pays dividends in both time and improved shooting results.