Auto Breech Lock Pro, progressive reloading without compromise
The Lee Auto Breech Lock Pro is a fully progressive reloading press available at a price point well below most premium single-stage presses. With four stations, automatic case indexing, and Lee's proven Breech Lock system, this press gives you everything you need to produce ammunition efficiently, whether you're loading pistol cartridges or stepping up to rifle rounds.
The Breech Lock quick-change system is the defining feature here. Dies are set up once inside colour-coded spline drive bushings, and from that point on, caliber changes take seconds with no readjustment needed, including primer size. That kind of flexibility is uncommon on a progressive press at this price.
Four stations, full control
Four processing positions let you size, charge, seat, and crimp in a single stroke. The fourth station enables factory crimping and post-sizing, which is especially useful when reloading once-fired or mixed range brass. Automatic indexing works reliably with cases up to 2.3" (58mm). For longer cartridges, manual indexing is possible, the press doesn't limit you.
Automatic primer feed
The built-in primer feed handles both large and small primers and is compatible with all major primer brands. Spent primers are safely routed out through the built-in through-ram disposal tube. Both a large and small priming arm are included, nothing extra to buy.
What's included, no hidden extras
Lee includes accessories that other manufacturers charge separately for:
- Ergonomic wood grip roller handle (sold separately elsewhere for around €45)
- Hex wrench set with integrated storage rack built into the press (around €25 elsewhere)
- Four colour-coded spline drive breech lock bushings
- Large and small priming arms
- Exclusive auto case placer, no adjustments required
The only item not included is the caliber-specific shell plate, which is sold separately.
Modular by design
The Auto Breech Lock Pro is built to be as automated or manual as you want. Disable the auto-index and it becomes one of the most capable single-station presses you'll find, useful for case prep tasks like depriming before tumbling. That combination of progressive throughput and single-stage flexibility makes this a press that adapts to your workflow.
Official help videos from Lee Precision
Lee Precision provides a full series of step-by-step instructional videos for the Auto Breech Lock Pro, covering every part of the setup and operation process:
- The complete reloading process demonstrated
- How to install and change the shell plate
- Installing the Universal Case Feeder
- Installing the Safety Prime
- Installing the Case Activated Powder Measure
- Installing the Bullet Feed Kit
Watch all videos on the official Lee Precision help video page.
Specifications
• Manufacturer: Lee Precision
• Type: Progressive reloading press (4 stations)
• Item number: 90900
• Max. automatic indexing: up to 2.3" (58mm) case length
• Primer feed: automatic, large and small
• Die retention: Breech Lock quick-change bushings (4 included)
• Required shell plate: sold separately (caliber-specific)
Pair this press with the Lee Breech Lock Quick Change Bushing for additional caliber setups, or the Lee Spline Drive Breech Lock Quick Change Bushings if you run multiple calibers. Looking for a simpler starting point? The Breech Lock Challenger Reloading Press is a solid entry-level option.
