Overview – What It Is
The Redding Ultramag is a heavy-duty single-stage press that prioritizes strength, leverage, and capacity for oversized cartridges. It features a unique compound leverage system with a large frame opening and long ram stroke, making it suitable for demanding tasks like case forming and loading large magnums. If you need a robust tool for precision reloading of big cases or want a dedicated station for heavy-duty operations, this press provides exceptional power without compromising alignment.
What’s in the Box
Typical contents (may vary by batch/region):
- Redding Ultramag press (7/8″-14 die threads).
- Operating handle with ball knob.
- Primer arm assembly for small and large primers.
- Spent-primer catcher with tube.
- Printed instructions and warranty information.
Usually not included: bench mounting hardware, shell holders, dies, case lube.
Materials & Build
- Frame – heavy-duty cast iron with powder-coat finish for durability and rigidity.
- Ram – 1″ diameter steel, hollow for spent primers; ensures smooth, deflection-free operation.
- Linkage & Pins – steel compound linkage; provides massive leverage with consistent feel.
- Handle – steel with comfortable ball knob; positioned for optimal ergonomics.
- Finish – powder coat resists corrosion, solvents, and reloading grime.
The unique frame design combines C-frame access with O-frame strength, offering excellent visibility and hand clearance while handling extreme pressures. It excels in maintaining alignment for match-grade ammo, though it may feel overbuilt for light pistol tasks.
Key Specs & Compatibility
- Die threads: 7/8″-14 (industry standard).
- Shell holders: compatible with standard Redding/RCBS/Lee styles.
- Stroke / window: 4-1/8″ usable ram stroke; 4-3/4″ frame opening for oversized cartridges (e.g., .50 BMG, .338 Lapua, .408 CheyTac).
- Spent-primer management: through-ram disposal with integral catcher and tube for clean operation.
- Mounting: three-hole base pattern; suitable for sturdy benches or quick-change systems.
Warranty & Origin
Manufacturer: Redding Reloading Equipment (USA). Components are primarily U.S.-made with some sourcing variations. Warranty is a limited one-year against defects in materials and workmanship under normal use; confirm current terms with Redding or your retailer via serial number or receipt for your region.
Where the Ultramag Excels – Use Cases
- Main press for large calibers – handles oversized cartridges like .50 BMG with ease.
- Heavy-duty forming – ideal for case reforming or full-length sizing of magnums.
- Rifle precision – .338 Lapua, .408 CheyTac: consistent leverage for micrometer seating.
- Pistol workflows – 9mm, .45 ACP: overbuilt but reliable for uniform crimps.
- Brass prep tasks – decapping, neck expansion where power and stroke matter.
Setup & Mounting – Do It Once, Do It Right
- Bench: solid surface (e.g., 2″ hardwood or metal stand); use Grade 8 bolts with large washers.
- Placement: front edge to allow full handle swing; ensure stability for heavy operations.
- Alignment: position over bench support to minimize flex under load.
- Primer path: attach catcher tube to a container; select arm for primer size.
- Lubrication: light oil on ram and linkages; avoid grease near primers.
- Die setup: tighten lock rings finger-tight; check runout with a gauge on test cases.
Real-World Notes
- The compound leverage provides effortless operation even on tough resizing jobs.
- Large opening simplifies handling long cases, reducing crooked starts.
- Primer catcher keeps debris contained, but empty regularly to prevent jams.
- Produces sub-MOA loads in calibers like .338 Lapua with proper dies.
- Durable construction holds up to decades of use; minimal wear reported by users.
Competitors – Quick Context
| Model | Advantages vs. Ultramag | Trade-offs vs. Ultramag |
|---|---|---|
| RCBS Rock Chucker Supreme | Proven O-frame; smoother priming | Smaller opening; less stroke for oversize |
| Redding Big Boss II | Similar quality; extra die support | Shorter stroke; higher cost for basics |
| Lee Classic Cast | Budget-friendly; adjustable handle | Less rigidity for extreme forming |
| Hornady Lock-N-Load Classic | Quick bushing changes | Potential flex; smaller capacity |
Pros & Cons
Pros
- Massive frame opening and stroke for large cartridges.
- Compound leverage for effortless heavy-duty work.
- Cast iron rigidity with minimal deflection.
- Integral primer catcher for clean operation.
- Excellent for precision and match-grade loading.
Cons
- Higher price than entry-level presses.
- Heavier and bulkier for small benches.
- Overkill for light pistol reloading.
- Priming system may require practice for consistency.
What to Buy with It (Day-One Kit)
- Shell holders for your calibers.
- Quality die set (micrometer seating upgrade recommended).
- Hand priming tool (e.g., Redding or RCBS).
- Case lube, pad, and cleaning wipes.
- Concentricity gauge for load quality checks.
- Quick-change bench plate if sharing space.
FAQ
- Can it handle .50 BMG? – Yes, with its large opening and stroke for oversized cases.
- What about small pistol cartridges? – Yes, though it is overbuilt; works well for uniform results.
- Is the priming system reliable? – Functional, but many prefer a hand primer for better feel.
- Does it fit quick-change systems? – Yes, with standard base pattern.
- How does it compare to cheaper presses? – Superior strength and precision, but at a premium cost.
Who Should Buy It
- Experienced reloaders tackling large magnums or case forming.
- Precision shooters demanding sub-MOA consistency.
- Hunters loading oversized cartridges for long-range use.
- Anyone upgrading for heavy-duty capacity over speed.
- Pros building a bench for versatile, high-power tasks.
Bottom Line
The Redding Ultramag is a powerhouse single-stage press that excels in handling oversized cartridges with precision and leverage. For reloaders focused on large magnums, case forming, or match-grade ammo, it delivers unmatched strength, clean operation, and durability without unnecessary features. If power and capacity drive your needs, the Ultramag is a premium choice.
