Rcbs 3 Die Roll Crimp Set - Legacy .40-70 Sharps Straight
$84.49
The RCBS 3 Die Roll Crimp Set for .40-70 Sharps Straight is purpose-built for the black powder cartridge enthusiast who respects the original craft of reloading for straight-wall cases. Whether you're running an original 1874 Sharps rifle or a quality reproduction, this Legacy series die set gives you the precision and control needed to load ammunition that performs the way it should in rifles designed decades ago. Black powder cartridge shooting demands attention to detail—these dies are engineered to support that discipline.
The three-die configuration handles each critical stage of the reloading process for straight-wall cartridges. The Sizer Die reduces the case to standard dimensions and removes the spent primer in one operation, though you'll need to lubricate your cases before sizing. The Expander Die opens the case mouth to the correct diameter for bullet seating and creates the flare or bell necessary for reliable bullet feeding. Finally, the Seater Die positions the bullet to your specifications and applies a roll crimp that locks the bullet in place—essential for the chamber pressures and handling demands of black powder loads.
Built from steel and backed by RCBS's reputation for accuracy and durability, this die set is a solid choice if you're serious about .40-70 Sharps ammunition. The roll crimp design is particularly suited to straight-wall cartridges, where a traditional bullet grip is less practical. If you're loading for a legacy rifle, you'll appreciate equipment that understands the caliber's heritage and the shooter's needs.
Key Features
- Three-die set specifically configured for straight-wall black powder cartridges
- Roll crimp seating die locks bullet securely for reliable feeding and performance
- Sizer die also handles primer removal in a single stroke
- Expander die creates proper case mouth flare for bullet seating
- Steel construction for long service life
- Part of RCBS Legacy series, designed for original and reproduction black powder rifles
Specifications
| Caliber | .40-70 Sharps Straight |
| Die Style | Roll Crimp Set |
| Number of Dies | 3 |
| Material | Steel |
| Series | RCBS Legacy |
| Suitable For | Straight-wall cartridges |
Frequently Asked Questions
What do I need to do before using the Sizer Die?
Cases must be lubricated before running them through the Sizer Die. This protects both the case and the die during the sizing and decapping operation.
Can I use these dies for other black powder cartridges besides .40-70 Sharps?
No. This die set is caliber-specific to the .40-70 Sharps Straight. If you're loading other black powder cartridges, you'll need a die set matched to that caliber.
What's the difference between a roll crimp and other crimp styles?
A roll crimp curls the case mouth inward around the bullet, gripping it firmly—a design that works particularly well for straight-wall cartridges typical of black powder rifles. It's distinct from a taper crimp or conventional crimps used in other reloading applications.
What rifle types is this die set designed for?
These dies are part of the RCBS Legacy series and are engineered for both original black powder rifles and modern reproductions chambered in .40-70 Sharps Straight, such as Sharps-pattern falling-block rifles.
