Lee Precision 90931 Collet Crimp Die 500 S&W Mag

The Lee Precision 90931 collet crimp die for 500 S&W Magnum gives handloaders a precision way to resize and crimp cases without the headaches of traditional die work. If you're loading for the 500 S&W—whether for hunting, handgun competitions, or range work—this collet-style die uses a mandrel system that grips the case neck for consistent results and minimal run-out. Because the collet mechanism works without case lube, your brass stays cleaner and lasts significantly longer with each reload cycle.

The collet crimp die is purpose-built for shooters who want to maximize brass life and maintain consistent chamber fit. By sizing only the neck rather than the entire case, this approach preserves the fire-formed dimensions that make your ammo shoot tighter. That precision neck-only sizing also means you'll notice improved accuracy when you seat bullets to touch or nearly touch the rifling—a proven technique for long-range and precision shooting. For magnum handgun loads, where consistent neck tension matters, this die delivers the control serious reloaders expect.

Lee Precision's collet design pays for itself quickly: the extended brass life from reduced wear means the cost of this die recoups in just 35 cases or so, making it a smart investment if you're processing volume or simply want to squeeze every reload out of your 500 S&W brass. Always reload only cases that have been fired in your own firearm to ensure proper fit and safety.

Key Features

• Collet-style neck sizing preserves fire-formed case dimensions for consistent chamber fit
• No case lube required, keeping brass cleaner and reducing wear
• Precision mandrel system minimizes run-out for accurate bullets seats
• Extended brass life—cases last roughly ten times longer than with standard dies
• Purpose-designed for 500 S&W Magnum handgun reloading

Specifications

Frequently Asked Questions

Do I need to use case lube with this collet crimp die?

No. The collet mechanism works without case lube, which is one of the main advantages—it keeps your cases cleaner and reduces unnecessary wear.

Will this die work for my 500 S&W Magnum handloads?

Yes, this die is specifically designed for 500 S&W Magnum. Always reload only cases that have been fired in your own firearm to ensure proper fit and safety.

How long do cases last with a collet crimp die versus a standard die?

Cases reloaded with this collet die typically last roughly ten times longer than with conventional dies, because the neck-only sizing approach reduces overall case wear.

Can I seat bullets close to the rifling with this die?

Yes. The collet system's precision mandrel and minimal run-out make it well-suited to seating bullets out far enough to touch or nearly touch the rifling, a proven technique for improving accuracy.