Lee 91551 Pro 4000 Press Kit 223 Rem Review

Taking the Lee 91551 Pro 4000 Press Kit 223 Rem for a Spin

For years, I’ve been meticulously reloading ammunition, a practice that demands precision, consistency, and a reliable workbench setup. My journey began with single-stage presses, then moved to turret presses, and eventually, I found myself looking for a way to increase output without sacrificing the quality I’ve come to expect. The Lee 91551 Pro 4000 Press Kit 223 Rem entered my radar as a potentially game-changing piece of equipment – a true progressive press that promised substantial production gains at a surprisingly accessible price point. It was the lure of genuine progressive reloading, without the premium cost often associated with such systems, that ultimately drove my decision.

Upon unboxing, the initial impression was one of practical, no-nonsense engineering. While not crafted from exotic alloys or boasting overly polished finishes, the press felt robust and well-assembled for its intended purpose. There was a slight sense of relief, coupled with a healthy dose of curiosity, knowing I was about to integrate a new piece of equipment into my reloading workflow. I had considered other progressive presses, but the combination of features and the perceived value of this particular kit made it stand out.

Real-World Testing: Putting Lee 91551 Pro 4000 Press Kit 223 Rem to the Test

My testing ground for the Lee 91551 Pro 4000 Press Kit 223 Rem was my dedicated reloading workshop, a space where consistency and efficiency are paramount. I aimed to put it through its paces across various reloading sessions, simulating typical usage patterns for a dedicated hobbyist. The goal was to assess its performance not just in ideal conditions but also under the kind of sustained use that reflects genuine, real-world application.

First Use Experience

My initial setup and testing occurred on my sturdy reloading bench. I meticulously followed the provided instructions, familiarizing myself with the press’s operation. The quick-start guide, while brief, proved helpful in navigating the initial setup.

For the first few hours, I focused on familiarizing myself with the press’s cycles and the various components. There was a definite learning curve, particularly with aligning cases and ensuring proper primer seating. One minor surprise was the slightly fiddly nature of the case feeder tubes, which, as noted by some users, can wiggle and require careful alignment for accurate brass placement.

Extended Use & Reliability

After several weeks of consistent use, cycling through hundreds of rounds of .223 Remington, the press has settled into a rhythm. The modular construction has allowed me to adapt it as needed, though the core progressive function has been my primary focus.

Durability-wise, the press has held up reasonably well. The Breech Lock quick change feature is a definite highlight, allowing for rapid die swaps once initial adjustments are made. I haven’t experienced any significant wear and tear that would compromise its functionality. Maintenance has been straightforward; a light application of lubricant on moving parts and occasional cleaning of the powder measure have kept it running smoothly. Compared to previous single-stage presses, the increased output is undeniable. However, the primer feed mechanism has remained a point of concern, occasionally requiring attention.

Breaking Down the Features of Lee 91551 Pro 4000 Press Kit 223 Rem

Specifications

The Lee 91551 Pro 4000 Press Kit 223 Rem is a comprehensive reloading package designed to get new reloaders up and running quickly. It features a progressive press design, allowing for multiple operations to occur simultaneously with each pull of the handle. The kit includes a Lee 3-die set which consists of a full-length sizing die, a rifle charging die, and a bullet seat and crimp die, all specific to the .223 Remington caliber.

A key component is the Universal Case Feeder, designed to automatically place cases into the shell plate. The Auto-Drum Powder Measure is integrated for precise powder dispensing, and the Safety Prime system handles primer insertion. This press uses a Breech Lock quick change feature in all four positions, enabling rapid die swaps. The through-ram primer disposal system is a practical addition, with a built-in tube for collecting spent primers. The kit also comes with four colored spline drive breech lock bushings, essential for its quick-change system.

For versatility, it includes both large and small priming arms, accommodating various primer sizes. The ergonomic wood grip roller handle provides a comfortable grip during operation. Tools for caliber changes, like a hex wrench, are included and feature built-in storage racks. A critical specification is the press’s overall height and reach, which is ample for most rifle cartridges, including .223 Remington. The shell plate system, rather than individual shell holders, means that caliber changes require swapping out the entire shell plate, a process that can seem daunting initially but simplifies repetitive tasks once set up.

Performance & Functionality

The primary job of the Lee 91551 Pro 4000 Press Kit 223 Rem is to efficiently and accurately reload ammunition. In terms of speed, it absolutely delivers on the promise of progressive reloading, significantly increasing the number of rounds one can produce in a given time compared to single-stage presses. The auto case placer is generally effective, though it can be finicky and requires careful alignment to prevent misfeeds.

The powder measure, a definite strength, has proven to be surprisingly accurate and consistent, with minimal leakage. This is crucial for ensuring consistent ballistic performance in the final rounds. However, the primer seating process has been a consistent area of frustration. While the Safety Prime system aims for simplicity, I found it to be somewhat cumbersome, and achieving consistently seated primers often requires extra attention and adjustment. This is where its performance can fall short of expectations for those prioritizing a perfectly smooth and error-free priming operation every single time.

Design & Ergonomics

The design of the Lee 91551 Pro 4000 Press Kit 223 Rem leans towards functionality and modularity. The use of cast aluminum for some components contributes to its relatively lighter weight compared to heavier steel presses, while still offering a degree of sturdiness. The Breech Lock system is a standout ergonomic feature, as it allows for near-instantaneous die changes, which is incredibly convenient for switching between different reloading stages or calibers.

The ergonomic wood grip roller handle is a welcome addition, offering a comfortable and positive grip, reducing hand fatigue during longer reloading sessions. However, there are areas where the design feels less refined. The plastic components in the case feeder tubes, as mentioned, can feel somewhat flimsy and prone to wiggling, impacting the accuracy of case placement. The overall feel is that of a workhorse tool, designed for utility rather than premium aesthetics, which is perfectly acceptable for its price point.

Durability & Maintenance

In terms of durability, the Lee 91551 Pro 4000 Press Kit 223 Rem appears to be built for moderate to heavy use, typical of a dedicated home reloader. The cast aluminum frame and steel components suggest longevity, provided it is not subjected to undue stress or misuse. The main points of concern regarding durability seem to revolve around the plastic parts, particularly those in the case feeding system.

Maintenance is generally straightforward. Regular cleaning of the powder measure and occasional lubrication of the press’s moving parts are essential. The through-ram primer disposal system is easy to access and clean. Users should be mindful of the instructions for caliber changes, as improperly installed shell plates could potentially lead to issues. I haven’t encountered any catastrophic failures, but the occasional need to re-align the case feeder or troubleshoot primer seating suggests that some components might require more attention over time than those on more expensive, precision-machined presses.

Accessories and Customization Options

The Lee 91551 Pro 4000 Press Kit 223 Rem comes as a remarkably complete package, aiming to provide nearly everything needed to start reloading .223 Remington. The inclusion of the 3-die set, Universal Case Feeder, Auto-Drum Powder Measure, and Safety Prime system means that users can begin reloading with minimal additional purchases, save for bullets, powder, and primers if they aren’t already stocked.

The Breech Lock quick change feature is perhaps its most significant customization aspect, as it allows for the purchase of additional Breech Lock bushings and pre-set dies for other calibers, making caliber changes incredibly rapid. The press itself is designed to accept standard-sized dies and components, so compatibility with other Lee reloading dies or those from other manufacturers that adhere to standard threading is generally good. The spline drive breech lock bushings are a specific Lee innovation that ensures precise alignment and retention of dies.

Pros and Cons of Lee 91551 Pro 4000 Press Kit 223 Rem

Who Should Buy Lee 91551 Pro 4000 Press Kit 223 Rem?

The Lee 91551 Pro 4000 Press Kit 223 Rem is an excellent choice for intermediate reloaders looking to transition from single-stage or turret presses to a more productive progressive system without breaking the bank. It’s also a solid option for new reloaders with a serious interest in high-volume production of common cartridges like .223 Remington, provided they have the patience to learn its quirks. The ease of caliber change with the Breech Lock system makes it attractive for those who reload multiple calibers, though each caliber change does require a separate shell plate.

Anyone who demands absolute, flawless primer seating on every single round with minimal fuss, or who expects a completely robust, metal-only construction might want to look at higher-priced alternatives. Users who are easily frustrated by occasional jams or the need for precise alignment might also find this press to be a challenge. For those starting out, I’d strongly recommend investing in a good reloading manual and perhaps a few extra Breech Lock bushings for different calibers if you plan on changing them frequently. Having a dedicated cleaning kit for the powder measure is also a good idea.

Conclusion on Lee 91551 Pro 4000 Press Kit 223 Rem

The Lee 91551 Pro 4000 Press Kit 223 Rem represents a significant step forward in accessible progressive reloading. It delivers on its promise of increased throughput and offers a surprisingly comprehensive package for its price. The Breech Lock system is a genuinely useful innovation, making die changes remarkably swift.

While the value proposition is undeniably strong, potential buyers must be aware of its temperamental nature in certain areas, particularly the primer feed and case alignment. It’s a press that rewards patience and a willingness to learn its nuances, rather than an ‘out-of-the-box’ perfect experience for absolute beginners. For the budget-conscious reloader looking to enter the world of progressive machines, this kit is a compelling option, provided you’re prepared for a slight learning curve. I would recommend it to those who understand its limitations and value its speed and feature set for the price.