Overview – What It Is
The Dillon RL550C is a four-station progressive press that produces a finished cartridge with each full handle stroke after the shellplate is primed and loaded. It employs manual shellplate indexing, which gives the operator direct control over advancement and allows easy inspection at every stage. Capable of handling over 160 pistol and rifle calibers with appropriate conversions, it strikes a balance between speed and precision for medium-volume reloading. If you seek a progressive system that is forgiving for learning the process or prefer pausing to verify operations without automated risks, this press provides proven reliability and flexibility for hunters, competitive shooters, and enthusiasts alike.
What’s in the Box
Typical contents (may vary by batch/region):
- Dillon RL550C press with four-station toolhead (7/8″-14 die threads).
- Automatic primer feed system including large and small pickup tubes, primer housing, and slide assembly.
- Powder measure with standard rifle and pistol charge bars.
- Operating handle with ergonomic grip.
- Toolholder equipped with necessary hex wrenches.
- Spent primer collection system with two bins.
- Loaded ammunition bin.
- Printed assembly and operation instructions.
Usually not included: dies, caliber conversion kits, case feeder (optional), shell holders for specific calibers, case lube.
Materials & Build
- Frame – heavy-duty steel and cast aluminum with Dillon blue powder-coat finish for corrosion resistance.
- Ram and shellplate – precision-machined steel and aluminum; smooth stroke with minimal play.
- Linkage & pins – hardened steel; compound design delivers consistent leverage.
- Primer system – durable polymer tubes and metal components for reliable feeding.
- Finish – powder coat withstands solvents, primers, and abrasive debris.
The robust construction minimizes deflection during heavy sizing, while open access to all stations facilitates cleaning and adjustments. Manual indexing enhances safety by allowing the reloader to advance only when ready, reducing risks like double charges. Users praise the build for enduring thousands of cycles with little wear, making it a lifelong tool when maintained properly.
Key Specs & Compatibility
- Die threads: 7/8″-14 (industry standard).
- Stations: 4 (decapping/sizing, priming/powder drop, bullet seating, separate crimp if needed).
- Indexing: manual shellplate advance for operator control.
- Calibers: over 160 pistol and rifle with conversion kits (e.g., 9mm, .45 ACP, .223 Rem, .308 Win; no rimfire).
- Output rate: 400-600 rounds per hour depending on experience and setup.
- Spent-primer management: collection bin keeps workspace clean.
- Mounting: four-hole base; compatible with Dillon Strong Mount or quick-change plates.
Warranty & Origin
Manufacturer: Dillon Precision Products, Inc. (USA, Scottsdale, Arizona). Assembly uses U.S.-sourced components with possible minor variations by batch. The RL550C includes Dillon’s renowned “No B.S.” lifetime warranty covering defects in materials, workmanship, and normal wear for the original owner; Dillon repairs or replaces at their discretion with no hassle. Confirm current terms directly with Dillon via phone or their website for your specific unit.
Where the RL550C Excels – Use Cases
- Medium-volume pistol reloading – 9×19, .45 ACP, .40 S&W: efficient for 300-500 round batches with consistent crimps.
- Rifle precision loading – .223 Rem, .308 Win, 6.5 Creedmoor: accurate powder throws for low extreme spreads.
- Multi-caliber benches – swap toolheads quickly for mixed sessions without full teardown.
- Learning progressive reloading – manual advance allows step-by-step mastery without automation overwhelm.
- Quality-focused production – inspect powder levels and primer seating at each station to minimize errors.
Setup & Mounting – Do It Once, Do It Right
- Bench: thick, rigid surface (e.g., 2″ hardwood or steel); bolt securely with Grade 8 hardware and washers.
- Placement: position at bench edge for full handle arc and bin access; use Dillon Strong Mount to raise and stabilize.
- Caliber conversion: install shellplate, locator buttons, and powder funnel specific to cartridge; adjust per manual.
- Die installation: thread into toolhead, set heights with cases; lock with set screws.
- Primer and powder: fill tubes, select size, test feed; calibrate measure with scale for accuracy.
- Lubrication: apply light machine oil to pivot points and ram; wipe excess to avoid primer contamination.
Real-World Notes
- Manual indexing offers excellent tactile feedback, helping detect issues like upside-down primers early.
- Powder measure maintains +/- 0.1 grain consistency with ball powders; flake types may need an optional baffle.
- Caliber switches take 10-20 minutes with spare toolheads, ideal for varied reloading needs.
- Optional case feeder and bullet tray boost rates to 800+ rounds per hour but require additional investment.
- With routine cleaning every 1,000 rounds, the press runs flawlessly for years; Dillon support resolves rare problems swiftly.
Competitors – Quick Context
| Model | Advantages vs. RL550C | Trade-offs vs. RL550C |
|---|---|---|
| Dillon XL750 | Auto indexing, 5 stations, case feeder standard for higher speed | Higher cost, steeper learning curve for novices |
| Hornady Lock-N-Load AP | Auto index, quick-change bushings, lower entry price | Shorter warranty, occasional primer feed inconsistencies |
| Lee Loadmaster | Budget-friendly, auto index in 5 stations | More setup tweaks needed, plastic components wear quicker |
| RCBS Pro Chucker 5 | Auto index, robust build for rifle focus | Fewer caliber options, premium pricing |
Pros & Cons
Pros
- Lifetime No B.S. warranty and top-tier support.
- Manual control prevents common progressive mishaps.
- Versatile across 160+ calibers with conversions.
- Smooth, durable operation for medium output.
- Easy to learn and maintain for all skill levels.
Cons
- Manual indexing limits speed compared to auto models.
- Requires separate kits for each caliber change.
- Higher upfront cost than basic progressives.
- Case feeder is an extra upgrade for max efficiency.
What to Buy with It (Day-One Kit)
- Caliber conversion kit(s) for your specific cartridge(s).
- Quality three- or four-die set (carbide for pistol recommended).
- Case lube, pad, and digital scale for verification.
- Hand priming tool as backup (e.g., RCBS or Lee).
- Concentricity gauge and cartridge checker for QA.
- Dillon Strong Mount and extra toolheads for swaps.
- Optional case feeder kit for increased production.
FAQ
- Can it handle both rifle and pistol calibers? – Yes, with the appropriate conversion kits and dies for reliable operation.
- What is the maximum output? – 400-600 rounds per hour standard; up to 800+ with case feeder and practice.
- How long for caliber changes? – 10-20 minutes with extra toolheads; plan dedicated setups for frequent switches.
- Does it work for large magnums? – Yes for routine loading; extreme forming may benefit from a single-stage supplement.
Who Should Buy It
- Beginners moving to progressive reloading who want control during learning.
- Experienced reloaders producing 200-600 rounds per session across calibers.
- Shooters valuing lifetime durability and hassle-free warranty.
- Hunters and competitors needing consistent, inspectable ammunition.
- Anyone seeking a versatile machine without full automation complexity.
Bottom Line
The Dillon RL550C is a time-tested progressive press that excels in controlled, medium-volume production with unmatched reliability and support. For reloaders handling pistol plinkers to precision rifle rounds who appreciate manual oversight to ensure quality, it delivers smooth performance, easy maintenance, and longevity that justifies the investment. If you want a progressive that grows with your skills without overwhelming speed, the RL550C is an outstanding, future-proof choice.
