The Redding 74141 is a dedicated small base body die designed specifically for the .284 Winchester cartridge. It full-length resizes the cartridge case body and sets back the shoulder to ensure reliable chambering and smooth bolt closure, without contacting, sizing, or altering the neck diameter or wall thickness. Built without internal decapping hardware or an expander ball, it eliminates internal friction and neck runout during the sizing stroke. This die operates as a modular companion tool for handloaders using bushing-style neck dies who need to restore outer case dimensions on repeatedly fired brass.

Key Features

• Body and Shoulder Sizing: Resizes the case body down to small-base dimensions and bumps the shoulder back without touching the cartridge neck.
• Decapping-Free Operation: Contains no decapper pin or expander assembly, eliminating friction-induced neck runout during the press stroke.
• Small Base Dimensioning: Sizes the lower case web and body narrower than standard dies to ensure flawless bolt closure and feeding in tight-tolerance chambers.
• Bushing Die Companion: Designed to integrate into advanced reloading workflows alongside separate neck-sizing or bushing dies.
• Industry Standard Threading: Built with 7/8"-14 threads to mount directly into standard single-stage and progressive reloading presses.

Specifications

• Manufacturer Part Number (MPN): 74141
• Calibre Compatibility: .284 Winchester
• Thread Interface: Standard 7/8"-14
• Compatible Shellholder: Redding #1 Standard Shellholder (Part: 11001) or #1 Competition Shellholder (Part: 11601)
• Operation Type: Manual, mechanical press die
• Internal Hardware: None (body-sizing only; no decapper or expander ball)

Who is the Redding Small Base Body Die .284 Winchester for?

• F-Class competitive shooters running .284 Winchester — requires sizing down case bodies on repeatedly fired brass to fit standard 7/8"-14 threaded presses and Redding #1 shellholders without altering carefully tuned neck tension.
• Handloaders managing tight custom rifle chambers — sizes the lower case web narrower than standard dimensions for .284 Winchester cases to eliminate stiff bolt closure in minimum-dimension chambers.

Less suitable for: Standard factory SAAMI-spec rifle chambers where small-base sizing causes unnecessary brass working near the case web; standard full-length sizing dies or standard-dimension body dies are better suited to preserve brass life. It is also unsuitable for single-pass sizing workflows, as an additional neck-sizing die is required to set neck tension and decap.