Description
The Lee Pro 4000 is Lee's second-generation progressive press, and it earns its reputation as one of the easiest ways to step up from single-stage or turret loading without spending premium money. Set up for 44 Special and 44 Magnum, it runs four stations so you deprime and size, charge and expand, seat, and then crimp or post-size with a separate station. One pull of the handle gives you one finished round, and the auto case placer drops a fresh case into position as the shell plate indexes. That adds up to several hundred rounds an hour once you settle into a rhythm.
What Sets the Pro 4000 Apart
The heart of this kit is the Breech Lock quick-change system. You make your initial die adjustments in the colored bushings, then after that you can swap dies in and out in seconds without losing your setting. The press ships with four colored spline drive breech lock bushings, large and small priming arms, and a hex wrench with a built-in storage rack so your tools stay put. Through-ram primer disposal routes spent primers down a tube to keep your bench clean.
Loading 44 Special and 44 Magnum on the Pro 4000
Because 44 Special and 44 Magnum share the same case head and bullet diameter, this one kit covers both cartridges with no extra parts. The included carbide 3-die set means you can skip case lube on straight-wall pistol brass, which is a real time-saver on volume runs. The Auto-Drum powder measure throws consistent charges, and the Safety Prime system works with all brands of primers for dependable on-press priming. It's also a solid choice for loading well-used or mixed range brass, and the fourth station gives you room for factory crimping.
A Few Things Worth Knowing
This is a progressive, so there's a learning curve. Many experienced reloaders love the value here, but it rewards patience during setup and finding your pace. The modular design helps, since you can run it with manual case feeding at first and add more automation as you get comfortable. Caliber swaps down the road use full shell plates rather than shell holders, so plan accordingly if you expand into other cartridges later.
Key Specifications
- Manufacturer: Lee Precision
- Caliber: 44 Special / 44 Magnum
- Press Type: Progressive, 4-Station
- Die Set: Breech Lock 3-Die Carbide Set
- Powder Measure: Deluxe Auto-Drum
- Priming: Safety Prime, automatic feed
- Case Feeding: Universal 5-Tube Case Feed Magazine
- Die Threads: 7/8"-14
- Country of Manufacture: United States
- Manufacturer Part Number: 91558
- UPC: 734307915582
- Shipping Weight: 13.75 lbs
What’s Included
- Lee Auto Breech Lock Pro press with 4-station fixed tool head
- Breech Lock 3-die carbide set (full length sizing, charging, seat and crimp)
- Shell plate for 44 Special / 44 Magnum
- Universal 5-Tube Case Feed Magazine
- Deluxe 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 with built-in storage rack
- Completed cartridge bin and bracket
Frequently Asked Questions
Can the Pro 4000 load both 44 Special and 44 Magnum?
Yes. Since 44 Special and 44 Magnum use the same case head and bullet diameter, this one kit handles both cartridges with no extra parts needed. You'll just adjust your seating die for the different overall lengths.
How many rounds per hour can you load on the Lee Pro 4000?
Many reloaders report running several hundred rounds an hour once they find a comfortable rhythm, with figures in the 300 to 400 per hour range being common for handgun ammo. It delivers one finished round per pull of the handle thanks to the auto-indexing shell plate. Your actual pace depends on how much automation you're using and how practiced you are.
Is the Pro 4000 a good press for a first-time reloader?
It's a strong value, but a progressive press does come with a learning curve during setup, so having some reloading experience helps. The modular design lets you start with manual case feeding and add automation as you get comfortable. Take your time dialing it in and it rewards you with fast, consistent output.
Do I need case lube with the Pro 4000 44 Special / 44 Magnum kit?
No. The kit includes a carbide 3-die set, and carbide sizing dies let you size straight-wall pistol brass like 44 Special and 44 Magnum without lube. That saves a cleanup step on high-volume loading sessions.




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