
Availability: In Stock
The Lee Precision Breech Lock 3-Die Set for .40 S&W gives you a complete reloading die system built around Lee's Breech Lock quick-change system. This setup is purpose-built for .40 S&W handgun ammunition, delivering the efficiency and repeatability serious reloaders depend on. The set includes everything you need to get started: a carbide full-length sizing die, a powder-through expanding die, a bullet seating die, a universal shell holder, a powder dipper, and load data and instructions. The colored spline drive breech bushings make die identification quick and foolproof—no more fumbling at the press.
Breech Lock dies snap in and out without tools, cutting setup time between cartridges and making the workflow faster for shooters loading multiple calibers. The carbide sizing die is durable and requires no lubrication, a real convenience for high-volume reloaders. If you're looking to reload .40 S&W efficiently and affordably, this kit removes the guesswork: you get matched dies and all the basic accessories in one box.
Fair warning: the load data included is specific to .40 S&W. While the dies can technically be adapted for 10mm Auto or .41 Action Express with adjustment, those cartridges require their own load data from a reliable source—don't rely on guesswork with a magnum caliber. Also, avoid using reloads in firearms with inadequate chamber support (like some Glock models where the feed ramp intrudes into the case), as this can cause dangerous pressure spikes.
| Cartridge | .40 S&W |
| Die Count | 3 dies |
| System | Breech Lock quick-change |
| Sizing Die | Carbide full-length |
| Included Accessories | Universal shell holder, powder dipper, load data, instructions |
The dies can be adjusted for 10mm Auto by backing out the bullet seating die and powder-through expanding die approximately 1 3/4 turns, but you must obtain 10mm load data separately from a reliable source like "Modern Reloading" or a powder manufacturer. For .41 Action Express, the dies would need to be backed out about two turns, and again, the included load data cannot be used—you'll need to source .41 AE load data independently. Stick with .40 S&W load data if you're not comfortable sourcing alternative data.
You get three dies (sizing, expanding, seating), a universal shell holder, a powder dipper, and printed load data and instructions for .40 S&W. Everything needed to begin reloading, minus a press and cases.
No. The carbide sizing die does not require case lube, which streamlines your reloading process and saves time and hassle.
Yes—avoid using reloads made with this die set in firearms with inadequate chamber support, such as certain Glock models where the feed ramp intrudes into the case. Reloads in unsupported chambers can generate dangerous pressure spikes. Always verify your firearm's chamber fully supports the cartridge before firing reloads.

SKU: 115788340 • Width: 4.8in • Height: 1.5in • Depth: 5.8in • Weight: 1.27oz





Availability: In Stock
The Lee Precision Breech Lock 3-Die Set for .40 S&W gives you a complete reloading die system built around Lee's Breech Lock quick-change system. This setup is purpose-built for .40 S&W handgun ammunition, delivering the efficiency and repeatability serious reloaders depend on. The set includes everything you need to get started: a carbide full-length sizing die, a powder-through expanding die, a bullet seating die, a universal shell holder, a powder dipper, and load data and instructions. The colored spline drive breech bushings make die identification quick and foolproof—no more fumbling at the press.
Breech Lock dies snap in and out without tools, cutting setup time between cartridges and making the workflow faster for shooters loading multiple calibers. The carbide sizing die is durable and requires no lubrication, a real convenience for high-volume reloaders. If you're looking to reload .40 S&W efficiently and affordably, this kit removes the guesswork: you get matched dies and all the basic accessories in one box.
Fair warning: the load data included is specific to .40 S&W. While the dies can technically be adapted for 10mm Auto or .41 Action Express with adjustment, those cartridges require their own load data from a reliable source—don't rely on guesswork with a magnum caliber. Also, avoid using reloads in firearms with inadequate chamber support (like some Glock models where the feed ramp intrudes into the case), as this can cause dangerous pressure spikes.
| Cartridge | .40 S&W |
| Die Count | 3 dies |
| System | Breech Lock quick-change |
| Sizing Die | Carbide full-length |
| Included Accessories | Universal shell holder, powder dipper, load data, instructions |
The dies can be adjusted for 10mm Auto by backing out the bullet seating die and powder-through expanding die approximately 1 3/4 turns, but you must obtain 10mm load data separately from a reliable source like "Modern Reloading" or a powder manufacturer. For .41 Action Express, the dies would need to be backed out about two turns, and again, the included load data cannot be used—you'll need to source .41 AE load data independently. Stick with .40 S&W load data if you're not comfortable sourcing alternative data.
You get three dies (sizing, expanding, seating), a universal shell holder, a powder dipper, and printed load data and instructions for .40 S&W. Everything needed to begin reloading, minus a press and cases.
No. The carbide sizing die does not require case lube, which streamlines your reloading process and saves time and hassle.
Yes—avoid using reloads made with this die set in firearms with inadequate chamber support, such as certain Glock models where the feed ramp intrudes into the case. Reloads in unsupported chambers can generate dangerous pressure spikes. Always verify your firearm's chamber fully supports the cartridge before firing reloads.
SKU: 115788340 • Width: 4.8in • Height: 1.5in • Depth: 5.8in • Weight: 1.27oz
