Redding Competition Pistol Seating Die .40 S&W/10Mm

The Redding Competition Pistol Seating Die for .40 S&W and 10mm is engineered for reloaders who demand tight concentricity and repeatable seating depth. Built to tighter tolerances than conventional seating dies, this die uses a precision-ground seating stem that matches bullet diameter exactly, virtually eliminating the runout problems that plague standard designs. The stem actually floats on a column of air during operation—a level of precision you won't find elsewhere. If you're loading pistol rounds for competition or accuracy-critical applications, this die delivers the consistency that translates to tighter groups.

What sets this die apart is its support system. Before seating begins, both the cartridge case and bullet are completely supported and aligned in a close-fitting, precision-ground sleeve. This dual-support approach keeps everything centered, reducing concentricity variation shot to shot. The straight-line design eliminates the angular forces that bend bullets in conventional dies, preserving bullet integrity and improving accuracy potential.

The micrometer adjustment is calibrated in .001" increments and operates smoothly without detents, giving you infinitely variable seating depth control. A reference setting feature lets you lock in your preferred depth and return to it instantly, speeding up changeovers between loads or letting you replicate a proven seating depth across multiple reloading sessions. This is the kind of refinement that matters when you're chasing sub-MOA groups or competing in pistol matches where every round counts.

Note: This die is not suitable for use with compressed loads.

Key Features

• Precision-ground seating stem matched to exact bullet diameter for minimal runout
• Dual support system aligns case and bullet before seating begins
• Straight-line seating design eliminates angular forces on bullets
• Micrometer adjustment in .001" increments, infinitely variable with no clicks
• Reference setting feature for repeatable seating depth
• Competition-grade tolerances throughout

Specifications

Frequently Asked Questions

Is this die compatible with .40 S&W and 10mm?

Yes. This die is designed for both .40 S&W and 10mm cartridges.

What is the micrometer adjustment range and how precise is it?

The micrometer is calibrated in .001" increments and is infinitely adjustable without clicks, allowing smooth, precise control over seating depth. A reference setting feature lets you mark and return to your preferred depth.

Can I use this die with compressed loads?

No. This die is not recommended for use with compressed loads.

What makes this die different from standard seating dies?

The Redding Competition die is built to significantly tighter tolerances, with a precision-ground seating stem that matches bullet diameter exactly. It features a dual-support system that aligns both the case and bullet before seating begins, and its straight-line design reduces concentricity problems inherent in conventional seating dies.