Forster Co-Ax Case and Cartridge Inspector Review

Taking the Forster Co-Ax Case and Cartridge Inspector for a Spin

Achieving consistent accuracy from handloaded ammunition is an obsession for many reloaders, and that obsession hinges on uniformity. My own journey into handloading began with a quest for tighter groups, which quickly led me to realize that even minor inconsistencies in case dimensions could be the culprits behind disappointing groups. It was this relentless pursuit of precision that ultimately led me to the Forster Co-Ax Case and Cartridge Inspector. This specialized tool from Forster is designed to measure three critical dimensions, ensuring uniformity in both cases and loaded cartridges.

The need for such a device became glaringly obvious after a particularly frustrating range day. My handloads, which I thought were meticulously crafted, were behaving erratically. It wasn’t just one or two fliers; it was a consistent pattern of deviation that pointed towards a fundamental issue with my ammunition. While I had a decent caliper, it wasn’t precise enough for the microscopic variations that can make or break a rifle’s accuracy.

Upon receiving the inspector, my initial impression was one of solid engineering. It possesses a heft and build quality that immediately suggests longevity, reminiscent of precision automotive components. The casting feels robust, and the overall design speaks of a tool built for serious work. I had considered a few simpler dial indicators and even some more elaborate optical comparators, but none offered the integrated functionality and specific case-support system of the Co-Ax Inspector. My first reaction was a quiet sense of satisfaction; this looked like the right tool for the job.

Real-World Testing: Putting Forster Co-Ax Case and Cartridge Inspector to the Test

First Use Experience

My initial testing grounds were my reloading bench and subsequent trips to the local indoor range. I set up the inspector next to my press, ensuring it was stable on the benchtop. The tool was surprisingly intuitive to use, and I found myself measuring a variety of spent cases and loaded cartridges within minutes.

I put the inspector through its paces with a range of rifle cases, from .223 Remington up to .30-06 Springfield. The tool performed admirably across these different sizes, demonstrating its versatility without any fuss. Even after extended use on a single session, the dial indicator remained responsive, and I didn’t notice any degradation in its precision.

One of the minor surprises was the slight learning curve in seating longer cartridges. While the inspector accommodates a wide range, some of the longer rounds required a bit of careful manipulation to ensure they were seated perfectly parallel to the measuring probe. This was a minor quirk, however, and easily overcome with a bit of practice.

Extended Use & Reliability

Over the past few months, the Forster Co-Ax Case and Cartridge Inspector has become an indispensable part of my reloading process. It gets used every time I load for a precision rifle, and occasionally just for checking factory ammunition. I’ve subjected it to the usual workshop environment – dust, the occasional faint oil smudge, and the general wear of a frequently used tool.

Despite the consistent use, there are no visible signs of wear and tear on the tool itself. The cast metal remains unmarred, the dial indicator’s needle sweeps smoothly, and the pilots still fit snugly into their housings. It has held up remarkably well, exceeding my expectations for durability.

Maintenance is straightforward. A quick wipe-down with a dry cloth after use keeps it clean, and occasional light lubrication of the moving parts is all that’s required. It’s a low-maintenance tool, which is exactly what you want when precision is the priority. Compared to some budget dial indicators I’ve used in the past, which tended to develop stiffness or lose their zero easily, this Forster unit feels like it’s built to last a lifetime.

Breaking Down the Features of Forster Co-Ax Case and Cartridge Inspector

Specifications

The Forster Co-Ax Case and Cartridge Inspector is engineered to measure three crucial dimensions critical for accuracy. It measures neck wall thickness, ensuring consistent pressure around the bullet. It also checks for bullet runout and cartridge runout, which is the concentricity of the bullet in relation to the case.

Measurements are displayed in precise increments of .001 inch, allowing for incredibly fine adjustments. The inspector accommodates a broad spectrum of cartridges, ranging from the diminutive .204 Ruger all the way up to the .45-70 Government. This wide compatibility is a significant advantage for reloaders working with a variety of calibers.

The unit includes a precision dial indicator that is accurate to .001 inch, which is the heart of its measurement capability. The maximum overall case length that can be inspected is 3.50 inches. It is manufactured from precision-engineered automotive-type castings, lending it a robust and durable feel. Crucially, it uses the same Pilots as their Case Trimmers, which is a convenient interchangeability for users of both Forster tools. However, it’s important to note that the 17 caliber Pilot is not compatible with this inspector.

Performance & Functionality

The core function of this inspector is to identify and quantify variations in case and cartridge dimensions, and in this regard, it excels. Its ability to precisely measure neck wall thickness is paramount for concentric bullet seating, directly impacting ballistic performance. Checking for bullet and case runout is equally vital, as an off-center bullet can lead to unpredictable flight characteristics.

The inspector’s standout strength lies in its unique method of supporting the case or cartridge. This support system ensures that measurements are taken relative to the case’s long axis, providing an accurate assessment of alignment. This is a significant improvement over simply chucking a case in a fixed jig.

A minor area where improvement could be considered is the tactile feedback when seating very thin-walled cases or particularly light bullets. While accurate, ensuring absolute perfect alignment requires a gentle touch. However, this is a function of the inherent physics of measurement rather than a fault of the tool itself. For its intended purpose and price point, its functionality is exceptional.

Design & Ergonomics

The design of the Forster Co-Ax Case and Cartridge Inspector is fundamentally about function, and it achieves this with a no-nonsense, robust aesthetic. The precision-engineered automotive-type castings provide a solid foundation that feels reassuringly stable on the bench. The finish is practical, designed for durability rather than showmanship.

Ergonomically, the inspector is designed for efficient operation. The dial indicator is easy to read, and the adjustment knobs are smooth and responsive. Securing the case or cartridge into the inspector is a simple, repeatable process.

The use of interchangeable pilots, common with Forster’s case trimmers, is a smart design choice that enhances usability for those already invested in the Forster system. The clearly marked dial indicator and the smooth action of the measuring probe make it comfortable to use for extended periods. There is virtually no learning curve for basic operation, though mastering the nuances of inspecting delicate components takes a little practice.

Durability & Maintenance

Built from what feels like heavy-duty cast metal, the Forster Co-Ax Case and Cartridge Inspector appears incredibly durable. I have no doubt it will withstand the rigors of a busy reloading bench for years, if not decades. The internal mechanisms, particularly the dial indicator, feel well-protected within the sturdy housing.

Maintenance is minimal, which is a huge plus. A quick wipe-down after each use is sufficient to keep it clean and free from debris. The moving parts are designed for smooth operation and don’t require frequent lubrication.

The potential failure points would likely be related to the dial indicator itself if subjected to significant shock or dropped. However, its well-protected placement within the casting mitigates this risk considerably. For a tool designed for precise measurement, its robust construction inspires confidence in its long-term reliability.

Accessories and Customization Options

The primary “accessory” for the Forster Co-Ax Case and Cartridge Inspector is its set of interchangeable Pilots, which are essential for properly supporting cases of different diameters. These pilots are critical for accurate measurement and are sold separately or often included with Forster’s case trimmers. As mentioned, the 17 caliber Pilot is specifically excluded from compatibility, so users of that small caliber will need to be aware of this limitation.

Beyond the pilots, there aren’t many other “customization” options in the traditional sense. The tool is designed for a specific purpose and executes it effectively. However, the compatibility with existing Forster trimmer pilots is a form of system integration that offers a degree of personalization if you already own other Forster tooling. There are no real “must-have” add-ons, as the tool is complete for its intended function.

Pros and Cons of Forster Co-Ax Case and Cartridge Inspector

Who Should Buy Forster Co-Ax Case and Cartridge Inspector?

This inspector is an invaluable tool for any serious handloader focused on precision rifle ammunition. If you are dedicated to achieving the tightest possible groups and understand the impact of case and bullet runout, this is a tool you absolutely need. It is particularly beneficial for those who reload for benchrest shooting, long-range precision, or any discipline where microscopic variations matter.

Individuals who should probably skip this product are those who reload for general plinking or hunting where extreme precision is not the primary goal. If you are just starting out and primarily load for semi-automatic firearms where slight variations are more forgiving, a good set of calipers might suffice initially. Those who exclusively load pistol cartridges will find less immediate benefit, as the inspector is primarily geared towards rifle case dimensions, though it can measure some larger pistol rounds.

For optimal use, ensuring you have the correct Forster Pilots for your calibers is essential. If you don’t already own Forster case trimmers, factor in the cost of purchasing the necessary pilots separately. A stable, vibration-free workbench is also key to maximizing the accuracy of any precision measuring instrument.

Conclusion on Forster Co-Ax Case and Cartridge Inspector

The Forster Co-Ax Case and Cartridge Inspector is a testament to thoughtful engineering and a deep understanding of the reloader’s pursuit of accuracy. It delivers on its promise to provide highly accurate measurements of critical ammunition dimensions, bridging the gap between what a caliper can tell you and what you truly need to know for precision handloads. The robust build quality, coupled with the precision of its dial indicator, makes it a reliable and enduring addition to any serious handloading setup.

For the price of $128.79, the value proposition is strong for those who demand consistency from their ammunition. While it is an investment, the ability to diagnose and correct issues related to case and bullet runout can significantly improve accuracy, potentially saving time and resources in the long run.

I would wholeheartedly recommend the Forster Co-Ax Case and Cartridge Inspector to any handloader who has moved beyond basic reloading and is actively seeking to optimize their ammunition for peak performance. If you are chasing accuracy and understand the importance of uniformity, this tool will quickly become indispensable. It’s a precision instrument that earns its keep with every case and cartridge it inspects.