Description
The Lee Precision Pro 4000 is a four-station progressive press kit configured specifically for 9mm Luger, and it covers the whole reloading cycle in one machine. Each pull of the lever handles a station, so once you've got a case in every spot, you're dropping a loaded round with every stroke. It's built on Lee's Breech Lock system, which lets you pop dies in and out in seconds without fussing over adjustments every time you sit down to load. For the price of what a lot of premium single-stage presses cost, you're getting real progressive output, and that's a big part of its appeal for folks who go through 9mm by the case.
What Comes Set Up in the Pro 4000 Kit
This kit ships ready to run 9mm. It includes a Lee 3-die carbide set, a shell plate, the Universal Case Feeder, an Auto-Drum Powder Measure, and the Safety Prime automatic primer feed. You also get four colored spline-drive breech lock bushings, large and small priming arms, an ergonomic wood-grip roller handle, and a hex wrench for caliber changes that stows in a built-in storage rack. A nice touch for safety is that powder and primers only feed when a case is actually present at the station.
Loading Speed and Everyday Use with the Pro 4000
Run at a relaxed pace of about ten seconds per cycle, the Pro 4000 will put out roughly 360 rounds an hour, and plenty of real-world reloaders settle comfortably in the 150 to 350 range once they find their rhythm. The modular design is where this press earns its keep: you can turn off auto-indexing and run it like a single stage for depriming or case prep, step up to turret-style loading, or go full progressive when you want volume. That flexibility makes it a solid fit for anyone wanting to learn the process gradually and then scale up their output.
Keeping the Pro 4000 Running Smooth
Like any progressive, this one rewards taking your time during setup and keeping things clean. A little dry lube on the indexing parts and a steady, unhurried lever stroke go a long way toward trouble-free loading over thousands of rounds. Caliber changeovers are quick thanks to the Breech Lock bushings, so adding dies and a shell plate for another cartridge down the road is an easy upgrade.
Key Specifications
- Manufacturer: Lee Precision
- Model: Pro 4000
- Manufacturer Part Number: 91555
- UPC: 734307915551
- Caliber: 9mm Luger
- Press Type: Progressive
- Stations: 4
- Die Set: Lee 3-Die Carbide Set
- Powder Measure: Auto-Drum Powder Measure
- Priming System: Safety Prime Automatic Primer Feed
- Case Feeder: Universal Case Feeder
- Die Change System: Breech Lock Quick Change
- Country of Origin: United States
- Shipping Weight: 13.79 lbs
What’s Included
- Lee 3-die carbide set (9mm Luger)
- Shell plate
- Universal Case Feeder
- Auto-Drum Powder Measure
- Safety Prime automatic primer feed
- Four colored spline-drive breech lock bushings
- Large and small priming arms
- Ergonomic wood-grip roller handle
- Hex wrench for caliber changes with built-in tool storage rack
Frequently Asked Questions
Is the Lee Pro 4000 a true progressive press?
Yes, it's a genuine four-station progressive. With a die in every position and a case fed at each cycle, you get a finished round every single pull of the lever. That's what separates it from a turret press, where it takes four strokes to complete one round.
How many rounds per hour can the Pro 4000 load?
At a relaxed ten-second-per-cycle pace, Lee rates it around 360 rounds an hour. Most reloaders report settling in somewhere between 150 and 350 per hour once they get comfortable with their rhythm and have everything dialed in. Output depends a lot on your pace and how smoothly your case and primer feeding runs.
Does the Pro 4000 kit come with everything needed to start reloading 9mm?
It comes with the carbide die set, shell plate, case feeder, Auto-Drum powder measure, and Safety Prime primer system, so the press itself is ready to go for 9mm. You'll still want a powder scale to verify your charges and a solid bench to bolt it to. Components like primers, powder, bullets, and brass are purchased separately.
Can the Pro 4000 be run as a single stage for case prep?
Yes, the modular design lets you turn off auto-indexing and run it like a single-stage press. That's handy for depriming batches, processing brass, or taking your time while learning before you step up to full progressive loading. Many users like having that flexibility in one machine.




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