RCBS Rock Chucker Supreme Press Review & Setup Guide

For decades, one name has been synonymous with bullet-straight consistency in the reloading world. The RCBS Rock Chucker Supreme isn’t just a tool; it’s a benchmark. It represents a commitment to precision that both beginners and seasoned veterans trust to turn components into custom ammunition.

Its reputation is built on a simple, powerful principle: a robust single stage press design that prioritizes flawless operation over speed. This focus makes it a frequent contender in any serious reloading press comparison. If you’re aiming for ultimate consistency, especially as you’re learning the craft, this press is often the first recommendation. For a complete, ready-to-start solution, many shooters opt for the RCBS 9356 Rock Chucker Supreme Master Reloading Kit, which bundles the press with essential accessories.

The RCBS Rock Chucker Supreme Legacy: Built for the Long Haul

What separates the Rock Chucker from the crowd? It’s the foundation. The cast-iron “O” frame isn’t just heavy; it’s incredibly rigid. This massive structure eliminates flex during the sizing and seating process, which is the enemy of precision. When you’re applying several tons of force, you need a press that won’t budge.

This inherent stability is why it’s consistently highlighted in detailed reloading press reviews. It’s also a key reason many consider it one of the best reloading press for beginners. You learn on a platform that doesn’t introduce variables. The muscle behind this operation is its renowned compound leverage system. The long handle provides remarkable mechanical advantage, making even stubborn military brass resizing feel smooth and controlled.

Key Features & Technical Specifications

Let’s break down what makes this precision reloading press tick. The specs tell a story of thoughtful engineering designed for a lifetime of use.

Core Mechanics & Build

• Frame: Massive cast-iron “O” design for supreme rigidity.
• Leverage: Compound linkage system for easy operation on all cartridges.
• Ram: Solid, 1-1/4″ diameter steel ram with a 4-inch stroke.
• Priming System: Swiveling, adjustable Priming Arm for both large and small primers (though some users seek tips for troubleshooting Rock Chucker Supreme priming system for perfect alignment).
• Spent Primer System: Built-in tube directs spent primers to a collection bottle for a clean reloading bench setup.

Technical Specifications Table

Step-by-Step Setup & Operation Guide

How to set up an RCBS Rock Chucker Supreme is a common first question. The process is straightforward, but a few key steps ensure optimal performance from the start.

Mounting and Initial Setup

1. Secure the Bench: Bolt the press to a solid, stable workbench. This is non-negotiable for precision. Use large washers under the bench top to distribute the load.
2. Install the Handle: Slide the handle into the linkage and secure it with the provided bolt. A drop of blue Loctite here is a good idea.
3. Attach the Primer Catcher: Slide the clear plastic tube into the slot at the base of the ram. Attach your collection bottle (a spent 35mm film canister works perfectly).

How to use a Rock Chucker for a Basic Loading Sequence

Let’s walk through a simplified rifle cartridge process. Always consult an authority guide like the Nosler manual for your specific cartridge data.

1. Deprime & Size: Lube your cases with a quality case lube. Install your sizing die. Run each case fully into the die to resize and deprime in one motion.
2. Trim, Chamfer & Deburr: After sizing, check case length. Trim if needed, then chamfer the inside and outside of the case mouth.
3. Prime: Use the press’s on-press priming system. Feel for the distinct “crunch” as the primer seats flush. Go slow.
4. Charge: Move the charged case to your powder scale or trickler for an exact charge weight. Double-check every charge.
5. Seat the Bullet: Install your seating die. Adjust for proper cartridge overall length (COAL). Seat the bullet with a smooth, consistent stroke.

That’s the rhythm. Each step is deliberate. This controlled pace is where the single stage reloading press shines for developing fundamental reloading precision techniques.

Performance Review: Precision & Durability

So, does it live up to the hype? In a word, yes. The proof is in the target. The Rock Chucker’s rigidity directly translates to minimal cartridge runoutthe amount a bullet or case neck is off-center. Lower runout often means better accuracy.

You can feel the quality. The handle stroke is smooth, with no slop or chatter. The spent primer system keeps your workspace clean. After thousands of rounds, the press will feel as tight as day one. This legendary durability is a core part of the rcbs brand promise. For a deep dive into its long-term performance, this in-depth Rock Chucker review covers years of user experience.

Where It Excels and Considerations

Strengths: Unmatched durability and rigidity. Excellent for precision rifle loading and learning fundamentals. Low maintenance. Holds its value incredibly well.

Considerations: It’s a single-stage, so high-volume pistol loading is slower. The priming system, while functional, has a learning curve. Some users prefer a hand primer for ultimate feel.

Comparison & Alternatives

No press exists in a vacuum. A common debate is the RCBS Rock Chucker Supreme vs Hornady Lock-N-Load. The Hornady offers a quick-change bushing system for faster die swaps, which is great for multi-caliber sessions. The Rock Chucker is often cited as the more rigid of the two, a key for precision rifle shooters.

Within the RCBS family itself, comparisons are inevitable. If you’re curious how it stacks up against their newer model, a look at the RCBS Rebel comparison provides useful insights on design and performance nuances.

Other notable alternatives include the Redding Big Boss II and the Forster Co-Ax. Each has unique features, like the Co-Ax’s floating die alignment. Yet, the Rock Chucker remains the default choice for its proven track record and widespread support.

Final Verdict & Recommended Accessories

The RCBS Rock Chucker Supreme is more than a press. It’s an investment in a reloading foundation that will last a lifetime. It forces good habits through its deliberate, single-stage nature. The consistency it delivers is why it remains a top choice for accuracy-focused reloaders.

Building Your System: Essential reloading press accessories

To get the most from your press, pair it with quality components. Heres a shortlist:

• Dies: For the best dies to use with Rock Chucker Supreme, consider match-grade sets from Redding or Forster for rifle, or carbide pistol dies from Lee or RCBS. Your choice here dramatically affects runout.
• Case Preparation: A good case trimmer (like the Frankford Arsenal Platinum) and a digital caliper are mandatory for precision work.
• Priming Tool: Many users add a handheld priming tool, like the RCBS Auto Priming Tool, for better tactile feedback during this critical step.
• Organization: Get a sturdy reloading block and label everything. An organized bench is a safe and efficient bench.

Start with the press, a solid manual, and a few key accessories. Learn the process. The precision you seek is built one carefully crafted round at a time. The Rock Chucker Supreme is the steadfast partner you need for that journey.