Rcbs 3 Die Roll Crimp Set - Legacy .405 Win

The RCBS 3 Die Roll Crimp Set for .405 Winchester is purpose-built for handloaders working with this classic black powder cartridge. Whether you're shooting an original period rifle or a modern reproduction, this three-die set handles the full reloading cycle for straight-wall cases with the precision and reliability RCBS is known for. The roll crimp finish ensures reliable bullet retention in a cartridge designed over a century ago—and still respected by hunters and shooters today.

Loading black powder cartridges requires attention to detail, and this die set is engineered around those needs. The Sizer Die handles initial case sizing and de-priming in one stroke (cases will need lubrication before sizing). The Expander Die then opens the case mouth to the correct diameter, simultaneously imparting the slight bell or flare necessary for smooth bullet seating and feeding in original or reproduction actions. Finally, the Seater Die seats your bullet and applies a roll crimp that locks it in place—essential for straight-wall cartridges where a conventional taper crimp isn't practical.

If you're building ammunition for .405 Winchester hunting or target work, this is the die set engineered specifically for your cartridge. RCBS has decades of experience with legacy calibers, and it shows in thoughtful design details like the roll crimp function built into the seater die.

Key Features

• Three-die set for complete straight-wall case processing
• Sizer die sizes cases and de-primes in one step
• Expander die bells case mouth for bullet feeding
• Seater die includes integrated roll crimp function
• Engineered for .405 Winchester and black powder rifle enthusiasts
• Compatible with standard single-stage reloading presses

Specifications

Frequently Asked Questions

What presses work with this RCBS die set?

This three-die set is compatible with standard single-stage reloading presses that accept standard die threads.

Is this die set for black powder cartridges?

Yes. This die set is part of RCBS's Legacy series and is specifically designed for loading the .405 Winchester and other classic black powder cartridges in both original and reproduction rifles.

Do I need to lubricate cases before sizing?

Yes. Cases must be lubricated before running them through the Sizer Die to prevent sticking and ensure proper die function.

What's included in the three-die set?

The set includes a Sizer Die (sizes and de-primes), an Expander Die (expands case mouth and imparts bell for feeding), and a Seater Die (seats bullet and applies roll crimp).