RCBS 99244 Single Stage Shell Holder #44 for 338 Marlin Express & 500 S&W Magnum

The RCBS 99244 Single Stage Shell Holder #44 is a precision reloading component built to keep your cases properly seated and aligned during the loading process. Engineered for .338 Marlin Express and .500 S&W Magnum, this shell holder locks into your single-stage or turret press and ensures consistent headspacing across every round you load. Whether you're developing loads for big-game hunting or magnum handgun rounds, reliable case alignment is the foundation of safe, accurate ammunition.

Made from hardened steel, the #44 holder grips 0.125 inch of the case head—the industry-standard contact depth for proper SAAMI headspacing. This secure capture prevents case movement during sizing, decapping, and powder charging, so your dies can work exactly as designed. If you're already running an RCBS single-stage or turret press, swapping shell holders for different calibers takes seconds and costs far less than buying another press.

Reloaders who shoot both heavy rifle cartridges and magnum pistol rounds appreciate having the right holder on hand. The #44 is a straightforward, no-frills component that does one job well—it's the kind of accessory that disappears into your workflow once installed, which is exactly what you want from brass-handling gear.

Key Features

• Hardened steel construction for durability and reliability
• Designed for .338 Marlin Express and .500 S&W Magnum cases
• Captures 0.125 inch of case head for proper SAAMI headspacing
• Compatible with RCBS single-stage and turret presses
• Quick-change design allows fast caliber swaps

Specifications

Frequently Asked Questions

Will this shell holder work in my RCBS single-stage press?

Yes. The RCBS #44 shell holder is designed to fit single-stage and turret presses from RCBS. It mounts and removes quickly, making it easy to switch between calibers.

What calibers does the #44 holder support?

The #44 is sized specifically for .338 Marlin Express and .500 S&W Magnum cases.

What does the 0.125-inch case head capture do?

This is the standard depth the shell holder grips the case head to maintain proper SAAMI headspacing during reloading. It ensures consistent alignment in your dies for every round.

Do I need a separate shell holder for each caliber?

Yes. Different cartridges have different case head diameters, so you'll need the correct shell holder (#44 in this case) for .338 Marlin Express and .500 S&W Magnum. Having the right holder on hand lets you swap between those calibers without press changes.