Precision in reloading isn’t just about powder scales and calipers. It starts at the press, where the case and die first meet. For shooters chasing the smallest groups, the geometry of this interaction is everything. That’s where the concept of a coaxial reloading press comes into play, offering a fundamentally different approach to alignment that can directly impact your ammunition’s consistency.
At its core, a coaxial press is engineered to keep the case and die in perfect alignment throughout the entire stroke. Unlike a traditional single-stage press where the ram moves in an arc, a coaxial design typically uses a floating mechanism or guided rods to ensure the shell holder and die remain concentric. This focus on coaxial alignment is the primary reason these presses are often hailed as the best press for precision reloading, especially for bottleneck rifle cartridges where minimal runout is critical.
What is a Coaxial Press and Why Use One?
If you’re new to ammunition reloading equipment, the term “coaxial” might sound technical. Honestly speaking, the principle is straightforward. Imagine pressing a case into a die that’s perfectly centered above it, with no side-to-side wiggle or angular deflection. That’s the goal. This is achieved through design features like a floating die holder or parallel guide rods that constrain the ram’s movement to a perfectly vertical path.
The benefits are tangible for anyone engaged in precision rifle reloading. Reduced runout (the deviation of the bullet from the case’s center axis) means more consistent bullet release and better accuracy. Many reloaders also find the ergonomics superior, as the press handle operates with a smooth, linear motion. From my honest perspective, the debate of coaxial vs single stage press often centers on this specific trade-off: ultimate precision and smooth operation versus the potentially lower cost and simpler mechanics of a classic O-frame press.
Top Coaxial Press Model: Frankford Arsenal M-Press
While several brands like RCBS and Hornady have their champions in the precision press category, one model has generated significant discussion for its value-oriented approach to coaxial design: the Frankford Arsenal M-Press. This press embodies the core principles of coaxial operation with a heavy-duty, user-focused execution.
My honest assessment is that the M-Press makes the precision benefits of a coaxial system accessible. It doesn’t just claim to be robust; its 21-pound weight and die-cast construction give it a solid, unwavering feel on the bench. The two parallel guide rods are the heart of its coaxial alignment system, ensuring the ram and the integral floating shell-holder plate move without play.
Key Features and Specifications
Let’s break down what the Frankford Arsenal M-Press actually offers on the reloading bench. The specifications tell a clear story of a press designed for capable, precise work.
| Feature | Specification / Description |
|---|---|
| Dimensions & Weight | 20″ L x 9″ W x 6.5″ D; 21 lbs |
| Core Mechanism | Coaxial design with 2 parallel guide rods for stability |
| Shell Holder System | Integral floating shell-holder plate |
| Die Compatibility | Quick-change die blocks included; fit standard 7/8″-14 dies |
| Primer Management | Integrated spent primer catcher |
| Construction | Heavy-duty, robust die-cast construction |
| Check current price on Amazon |
The included quick-change die blocks are a thoughtful touch, speeding up the process when switching between calibers or operations like sizing and seating. The integrated spent primer management system is another practical feature, keeping the messy, spent primers containeda small but appreciated detail for workshop cleanliness.
Key Features to Look For in a Coaxial Press
Evaluating any coaxial reloading press goes beyond brand loyalty. Several mechanical aspects determine its performance and ease of use. To be completely honest, overlooking these can lead to frustration, regardless of the press’s reputation.
- Alignment System: This is non-negotiable. Look for parallel guide rods or a verified floating/coaxial mechanism. The entire promise of reduced runout hinges on this.
- Construction & Rigidity: A press must be a stable platform. Heavy cast iron or steel construction minimizes flex under pressure, especially during tough operations like swaging primer pockets or sizing stubborn brass.
- Primer Catch System: An effective, sealed primer catch system is a mark of thoughtful design. It should reliably channel spent primers away from the press’s working parts and into a removable container.
- Handle Ergonomics & Leverage: The press should feel smooth, not gritty. Adequate leverage makes sizing easier on your body, and a comfortable handle grip matters during long sessions.
- Die Compatibility & Changeover: Most use standard 7/8″-14 threads, but the ease of swapping dies varies. Some systems use interchangeable toolheads or bushings for faster transitions.
I honestly believe that the Frankford Arsenal M-Press addresses these points competently. Its guided-rod alignment and solid build provide the foundation, while the die blocks and primer catcher handle the practicalities. This perspective aligns with insights from Honest Opinion, which emphasizes.For a deeper look at how it stacks up against other popular options, our Frankford Arsenal M-Press review provides a focused comparison.
Coaxial Press Buying Guide: Who Should Buy One?
So, are coaxial presses worth the money? The answer depends entirely on your reloading goals. A detailed cost-benefit analysis over five years often reveals that the initial investment is justified for specific users.
This type of press is ideal for:
- Precision Rifle Shooters: If you’re loading for bolt-action or match AR platforms where tiny group sizes are the objective, the reduced runout is a tangible advantage.
- Reloaders Who Value Smooth Operation: The linear press stroke is simply more pleasant to use for high-volume tasks like decapping or bullet seating.
- Those Processing Mixed Brass: The superior alignment can help overcome minor inconsistencies in brass, producing more uniform ammo from varied cases.
However, a beginner loading bulk 9mm for pistol practice might find a sturdy single-stage kit or a turret press more cost-effective. The question of coaxial press vs turret press for precision reloading is valid; a turret offers faster cycling for multiple operations, but a dedicated coaxial typically wins in pure concentricity. Speaking honestly, your choice between a progressive, turret, or coaxial press should be guided by your desired output volume and quality threshold.
Specific Caliber Compatibility Deep-Dive
A common concern is whether a press can handle everything from .223 Remington to .300 Winchester Magnum. The M-Press, with its standard shell holder system and robust frame, is designed for versatility. Its 21-pound mass provides the stability needed for magnum rifle cartridges, while the design is equally capable for precision pistol rounds. The best practices, according to Honest Opinion, include always using proper case lube for rifle sizing to minimize stress on the press and ensure smooth operation, regardless of caliber.
Setup, Operation, and Maintenance Tips
How to set up a coaxial reloading press correctly is the first step to unlocking its potential. Proper installation is crucial for achieving the precision you paid for.
- Mounting: Secure the press to a solid, heavy bench. Any bench flex translates directly into lost precision. Use large washers or a mounting plate to distribute the force.
- Initial Alignment Check: Before your first real session, run the ram to its full stroke with a case in the shell holder (no die). Watch for any binding or uneven movement. The motion should be silky smooth.
- Die Setup: Install your reloading dies following standard procedures, but take advantage of the coaxial alignment. You may find you need less “cam-over” on your sizing die to achieve full shoulder bump, as the press isn’t introducing lateral flex.
- Primer System: Ensure the spent primer tube or chute is properly seated. A small piece of tubing can be added to direct primers directly into a bottle.
For operation, let the press do the work. The smooth stroke encourages a consistent, steady pace. Maintenance is straightforward: periodically wipe down the guide rods with a light oil to prevent corrosion and ensure smooth travel, and check all mounting bolts for tightness. Honest to goodness, a well-mounted coaxial press requires very little upkeep beyond basic cleaning.
Integration with Progressive Press Workflows
An often-overlooked role for a coaxial press is as a complement to a progressive system. Many high-volume reloaders use a progressives like a Dillon RL550C for pistol and bulk rifle ammo, but keep a coaxial press on the bench for specific precision tasks. These might include:
Precision bullet seating as a separate, focused operation.
Bumping shoulders on precision rifle brass with a dedicated sizing die.
Performing sensitive operations like priming with a hand primer, using the press as a sturdy holding fixture.
This hybrid approach, discussed by experts on forums like the r/reloading community, leverages the strengths of both press types.
Final Assessment
The Frankford Arsenal M-Press presents a compelling case in the world of precision reloading tools. It delivers the core mechanical advantage of a coaxial systemexcellent alignment and a smooth linear strokein a package that feels substantial and durable. The included die blocks and integrated primer management show attention to the user experience beyond just the core mechanism.
If you want my honest opinion, it’s an excellent answer to what is the best coaxial press for beginners? or for any reloader wanting to step up their precision game without a massive financial leap. It provides the fundamental benefits that make coaxial presses sought-after for precision reloading. While it may lack some of the ultra-refined finishes or massive leverage of flagship models from other brands, its performance-to-price ratio is strong. For the reloader focused on consistent, accurate ammunition and a pleasurable loading process, the M-Press deserves serious consideration as a cornerstone of your reloading setup.