Description
If you own a Lee Auto Breech Lock Pro and want to reload a different family of cartridges, the shell plate is the piece that makes it happen. The #4 plate covers a wide spread of cartridges, working with .222 Remington, .223 Remington, .380 Auto, .32 S&W Long, and .32 H&R Magnum. That makes it one of the more versatile plates in the lineup, bridging a popular rifle round and a few common handgun calibers on a single part.
What the Lee Pro 4000 Shell Plate #4 Does
On a progressive press, the shell plate is what holds each case by the rim and rotates it from station to station as you cycle the handle. The #4 is machined from steel so it holds its dimensions under the repeated pressure of sizing, priming, charging, and seating. A properly matched plate keeps cases centered and square to the dies, which is where consistent, trouble-free loading comes from.
Fitment Notes for the Breech Lock Pro Plate
This is important: the Auto Breech Lock Pro and Pro 4000 use their own dedicated shell plates. They will not accept plates from the Lee Pro 1000, Load-Master, or any other press, and this press won't take another brand's plates either. So if you're adding calibers or replacing a worn plate, matching it to your exact press is the whole ballgame. The numbering follows Lee's Universal Shellholder system, so the same number corresponds to the same cartridge rim family you already know.
Adding Calibers to Your Lee Auto Breech Lock Pro
Swapping plates is the quickest way to expand what your press can run without buying another machine. Reloaders who already load .223 on this setup often pick up a #4 and realize it also covers their .380 pocket pistol and a couple of .32 revolver rounds, which stretches the value of one small part. It's a straightforward, no-drama component that does exactly what it should, and folks who run it report it fits right and performs as expected.
Key Specifications
- Manufacturer: Lee Precision
- Manufacturer Part Number (MPN): 90630
- UPC: 734307906306
- Shell Plate Size: #4
- Compatible Cartridges: .222 Rem, .223 Rem/5.56×45 NATO, .380 Auto, .32 S&W Long, .32 H&R Magnum
- Material: Steel
- Compatible Press: Lee Auto Breech Lock Pro / Pro 4000
- Series: Breech Lock Pro Shell Plate
- Country of Origin: United States
- Length: 2.85 in
What’s Included
- One (1) Lee Breech Lock Pro Shell Plate #4
Frequently Asked Questions
Which cartridges does the Lee Breech Lock Pro Shell Plate #4 work with?
The #4 plate is set up for .222 Remington, .223 Remington (including 5.56×45 NATO), .380 Auto, .32 S&W Long, and .32 H&R Magnum. Those cartridges all share a compatible rim size, which is why one plate covers both a rifle round and several handgun calibers. It's a handy plate for anyone loading across those families.
Will this shell plate fit my Lee Pro 1000 or Load-Master press?
No. This plate is built specifically for the Lee Auto Breech Lock Pro and Pro 4000 presses, and those presses only accept their own dedicated plates. The Pro 1000, Load-Master, and other presses use different shell plates entirely, so you'll want to match the plate to your exact press.
Is the Lee Pro 4000 Shell Plate #4 made of steel?
Yes, it's machined from steel so it holds up to the repeated pressure of a full progressive cycle. That keeps your cases indexed and square to the dies through sizing, priming, charging, and seating. It's a simple, durable part that does its job without fuss.
How does the shell plate numbering work?
Lee's Breech Lock Pro shell plates follow the same numbering as their Universal Shellholders, so the number corresponds to a specific cartridge rim family. If you already know which Lee shellholder number fits your brass, the matching plate number will cover the same cartridges. The #4 lines up with the .222/.223/.380 Auto/.32 group.




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