Lee Precision Breech Lock 3-Die Set .40 S&W Reloading Dies

The Lee Precision Breech Lock 3-Die Set for .40 S&W delivers consistent ammunition production with the convenience of quick-change die installation. This complete reloading die set includes full length sizing die, powder through expanding die, and bullet seating die for comprehensive cartridge preparation.

What Makes This Different

The Breech Lock system eliminates threading and unthreading dies during caliber changes, reducing setup time from minutes to seconds. Each die locks securely with a quarter-turn mechanism that maintains precise alignment shot after shot. The powder through expanding die design allows simultaneous case mouth expansion and powder charging when used with Lee's Auto-Disk or Perfect Powder Measure.

Key Features

• Breech Lock quick-change system for rapid die swapping
• Full length sizing die with decapping pin assembly
• Powder through expanding die for efficient case preparation
• Bullet seating die with built-in crimp adjustment
• Heat-treated steel construction for extended service life
• Includes three Breech Lock bushings for permanent installation
• Compatible with all standard 7/8-14 thread presses

The sizing die returns fired cases to SAAMI specifications while the universal decapping pin handles various primer types. The expanding die's powder-through design streamlines the reloading process, particularly beneficial for high-volume loading sessions. Competition shooters and law enforcement agencies rely on this die set for producing match-grade .40 S&W ammunition with consistent case dimensions and bullet seating depth.

Technical Specs

• Caliber: .40 Smith & Wesson
• Thread: Standard 7/8-14 TPI
• Material: Heat-treated alloy steel
• Finish: Black oxide coating
• Includes: Full length sizing die, powder through expanding die, bullet seating die
• Bushings: Three Breech Lock bushings included
• Compatibility: All standard reloading presses
• Country of Origin: USA

This die set transforms brass preparation from a tedious process into efficient ammunition production. The Breech Lock system's reliability and the dies' precision engineering make it the logical choice for serious .40 S&W reloaders.