Stainless Pro Carbide Sizing Die 40 S&W/10Mm

The Lyman Stainless Pro Carbide Sizing Die for 40 S&W/10mm is built for reloaders who want durability and reliability in their handgun die setup. Unlike older steel dies that corrode and wear, this sizing die pairs a stainless steel body with tungsten carbide components—a combination that cuts down on maintenance, extends die life, and reduces the physical effort needed to size each case. If you're loading pistol ammunition on a progressive press or single-stage setup, this die is engineered to handle volume without premature wear or frustration.

The heart of the design is a highly polished carbide sizing ring that resists the abrasion that dulls conventional steel dies. The carbide is backed by a generous radius at the case mouth, which helps cases align smoothly and safely as they feed into the die—especially useful if you're running a progressive press at speed. The spring-loaded decapping rod system works independently of sizing, ensuring primers are stripped cleanly and completely from the pocket on every stroke, so you get no misfeeds and no leftover primers gumming up your workflow.

Built and backed by Lyman, a reloading equipment maker with decades of handgun die experience, this die fits standard toolheads and works with common reloading presses. It's a straightforward, single-purpose tool: size your 40 S&W or 10mm cases with minimal wear, minimal corrosion, and minimal headache.

Key Features

• Stainless steel die body resists corrosion and toughness for long-term durability
• Tungsten carbide sizing ring minimizes wear and reduces sizing force
• Highly polished carbide surface for smooth case entry and alignment
• Generous radius on die mouth aids case feeding on progressive and single-stage presses
• Spring-loaded decapping rod ensures consistent, forceful primer ejection
• Fits standard toolheads and common reloading presses

Specifications

Frequently Asked Questions

Will this die work with my progressive press?

Yes. The generous radius on the die mouth is specifically designed to help cases feed and align smoothly on progressive presses, making it well-suited for high-volume handgun reloading setups.

Why choose a carbide sizing die over a steel die?

Carbide sizing rings resist the wear that dulls steel dies, so they maintain consistent sizing force and accuracy over thousands of rounds. The polished carbide surface also reduces friction, making the sizing stroke easier and faster. Combined with the stainless steel body, you get a die that lasts longer and doesn't corrode like traditional steel dies.

Does this die include everything I need to reload?

This is a sizing die only. You'll also need a reloading press, shell holder, powder measure, primer seating tool, bullet seating die, and other components to complete a full reloading setup for 40 S&W or 10mm.

Can I use this for both 40 S&W and 10mm?

No. Each caliber requires its own die. This die is sized for 40 S&W and 10mm—you cannot interchange calibers in a single die. Order the appropriate die for each caliber you reload.