Lee Carbide Breech Lock Bushings 4-Die Set .40 S&W/10Mm
The Lee Carbide Breech Lock Bushings 4-Die Set for .40 S&W and 10mm is a complete reloading solution for pistol shooters who want reliable, repeatable ammunition without the fuss of constant die changes. This carbide die set uses Lee's quick-change bushing system, so swapping between .40 S&W and 10mm takes seconds—no wrench fumbling, no thread-stripping headaches. If you're serious about keeping your reloading bench efficient and your ammo costs down, this set handles the core operations: full-length sizing, powder charging, bullet seating, and factory crimping all in one package.
Carbide dies are the workhorse choice for high-volume pistol reloaders. They run cooler and faster than steel, and they won't stick or gall brass the way older equipment can. The colored quick-change bushings aren't just convenient—they're a built-in safety feature, letting you visually confirm you've got the right die in the turret. You get a universal shell holder and powder dipper in the box, plus load data so you can start handloading right away. The micrometer bullet seating die gives you the precision control serious shooters expect, whether you're loading for the range, self-defense, or hunting.
The design flexibility is worth noting: with minor adjustments, this set can also load 10mm Auto (back out the powder-through expanding die and bullet seating die about 1¾ turns from their .40 S&W position) or even 41 Action Express with the appropriate load data sourced from powder manufacturers. That versatility means your investment scales with your reloading interests over time.
Key Features
- Quick-change carbide die set for .40 S&W and 10mm pistol reloading
- Colored bushings for fast, visual die identification and turret setup
- Full-length sizing die, powder-through expanding die, micrometer bullet seating die, and factory crimp die
- Carbide construction for speed, durability, and reliable brass handling
- Includes universal shell holder, powder dipper, and factory load data
- Adaptable with minor adjustments for 10mm Auto and 41 Action Express
Specifications
| Brand | Lee Precision |
| Caliber | .40 S&W / 10mm |
| Die Type | Carbide Breech Lock 4-Die Set |
| Die Configuration | Full-Length Sizing, Powder-Through Expanding, Micrometer Bullet Seating, Factory Crimp |
| Quick-Change System | Colored bushings included |
| Accessories Included | Universal shell holder, powder dipper, load data instructions |
Frequently Asked Questions
Can I use this die set for both .40 S&W and 10mm Auto?
Yes. The set is designed for .40 S&W, and you can adapt it for 10mm Auto by backing out the powder-through expanding die and bullet seating die approximately 1¾ turns from their .40 S&W position. This design saves you from buying separate complete sets if you reload both cartridges.
What's included with the Lee Carbide Breech Lock Bushings 4-Die Set?
You get the four carbide dies (full-length sizing, powder-through expanding, micrometer bullet seating, and factory crimp), colored quick-change bushings for each die, a universal shell holder, a powder dipper, and printed instructions with factory load data for .40 S&W.
What does the quick-change bushing system do?
The colored bushings let you swap dies in and out of your turret press without unscrewing anything—just pop one die assembly out and drop the next in. The different colors also help you confirm visually that you've got the correct die positioned before you start pulling the handle.
Is this set suitable for high-volume pistol reloading?
Yes. Carbide dies are built for speed and durability in high-volume work. They run cooler and won't gall or stick brass like older steel dies, making them ideal for shooters who load 10mm or .40 S&W regularly for the range, hunting, or self-defense.

