The RCBS 357 Sig Full Length Die Set (Model 23101 / R23101) is a precision-engineered, manual reloading tool designed specifically for processing bottlenecked .357 Sig brass. This 2-die set is manufactured from hardened steel and uses manual mechanical operation to perform all essential case-preparation and bullet-seating steps. Because these are steel (non-carbide) dies, case lubrication is mandatory during the resizing process to prevent galled brass or stuck cases.

Key Features

• Full-Length Sizer Die: Resizes the exterior of fired brass cases back to SAAMI minimum cartridge dimensions, de-primes spent primers, and expands the case neck to receive a new bullet.
• Vented Design: The sizer die features engineered vents that release trapped air, preventing case damage and dimpling caused by excess lubricant.
• Integrated Seating and Crimping: The included Seater Die features a bullet seater plug and an integrated roll crimper, allowing you to seat the bullet to the correct depth and apply a secure roll crimp in a single operation.
• Precise Headspace Tolerances: Built to maintain minimum tolerances, preventing changes in case body length during full-length resizing.

Product Specifications

• Brand: RCBS
• Model Number: 23101 (also catalogued as R23101)
• Calibre: .357 Sig
• Die Type: Steel (Non-Carbide), 2-Die Set
• Interface Compatibility: Standard 7/8"-14 thread pitch (compatible with most standard single-stage and progressive reloading presses)
• Shipping Weight: Approximately 1.21 lbs (0.55 kg)
• Packaging Dimensions: Approximately 6.00" L x 4.55" W x 1.75" H (15.2 cm x 11.6 cm x 4.4 cm)

Who is the Rcbs 357 Sig Full Length Die Set for?

• Target shooters reloading 357 Sig ammunition — benefits from the standard 7/8"-14 thread pitch, which integrates seamlessly with major single-stage and progressive reloading presses to restore fired bottleneck cases back to exact SAAMI minimum dimensions.
• Handgun hunters reloading 357 Sig ammunition — utilizes a durable steel 2-die set with a shipping weight of approximately 1.21 lbs to size, de-prime, expand, and crimp hunting handloads to precise headspace tolerances for consistent field performance.

Less suitable for: reloaders seeking to process other .357 calibre rounds or straight-walled cartridges such as .357 Magnum or .40 S&W, which cannot be processed in this set without risking case failure; these users require calibre-specific die sets designed for those exact cartridge geometries.