RCBS Full‑Length Sizer Die – Group A – .308 Winchester (Single Sizer Die Only)
Important Note: This is the single Full‑Length Sizer Die only (Group A) for .308 Winchester. Requires RCBS #3 shellholder (sold separately) and case lubrication to function.
The RCBS Full‑Length Sizer Die – Group A for .308 Winchester is a precision-engineered tool essential for reloaders seeking consistent chambering in any .308 Winchester rifle. It restores fired brass to SAAMI minimum cartridge dimensions by resizing the full case body, de‑priming, and expanding the neck in one smooth motion—ensuring reliable feeding and accurate bullet seating. The die is vented to avoid hydraulic lock or case damage due to trapped air or excess lube, and machined to tight tolerances to maintain correct headspace. :contentReference[oaicite:0]{index=0}
Key Features & Function:
- Full‑case resizing: Restores body and shoulder to SAAMI minimum dimensions, ensuring smooth chambering across firearms. :contentReference[oaicite:1]{index=1}
- Integrated decapping and expander: The built-in decapping rod removes spent primers, while the expander expands the neck to proper diameter for bullet seating. :contentReference[oaicite:2]{index=2}
- Vent ports: Allow trapped air and excess lubricant to escape, preventing case dents and hydraulic pressure that could cause damage. :contentReference[oaicite:3]{index=3}
- Precise headspace control: Machined for SAAMI minimum tolerances to avoid case stretching or body length changes. :contentReference[oaicite:4]{index=4}
- High‑quality hardened steel construction: Durable and polished for smooth operation and long service life. :contentReference[oaicite:5]{index=5}
- Standard 7/8″‑14 thread: Compatible with most reloading presses; shellholder required separately (RCBS #3). :contentReference[oaicite:6]{index=6}
Practical Applications:
Precision Reloading & Reliability
For shooters loading .308 Winchester brass for hunting, competitive shooting, or long-range accuracy, this sizer die ensures consistent brass dimensions for smooth chambering and repeatable headspace—critical for accuracy and safety.
Reloading Efficiency & Case Life
The vented design and high tolerances reduce case stretching and damage, extending case life and improving consistency in repeated resizing operations.
Compatibility with Full-Length Die Sets
Fits as part of RCBS Group A Full-Length die sets (e.g. RCBS 15501), or can be used standalone in single-stage or turret presses with proper shellholder and lubricant. :contentReference[oaicite:7]{index=7}
Included & Required Accessories
- Single Full‑Length Sizer Die – Group A (.308 Win)
- Requires RCBS #3 shellholder (sold separately)
- Case lube recommended for proper operation and to prevent sticking
Specifications:
| Characteristic |
Specification |
| Brand |
RCBS |
| Product Type |
Full‑Length Sizer Die (Group A) for .308 Winchester |
| Caliber |
.308 Winchester |
| Die Operation |
Resizes body & shoulder, decaps, expands neck |
| Material |
Proprietary hardened and polished die steel |
| Thread Size |
Standard 7/8″‑14 |
| Vent Ports |
Yes (to release air and lubricant pressure) |
| Headspace Control |
Machined to SAAMI minimum tolerances |
| Shellholder Required |
RCBS #3 (sold separately) |
| Compatibility |
Single-stage or turret presses |
| Country of Manufacture |
USA (Oroville, CA) |
Summary
The RCBS Full‑Length Sizer Die – Group A for .308 Winchester is a fundamental component for precision reloading. Designed for reliability, longevity, and accuracy, it restores fired cases to ideal chamber dimensions, minimizes brass damage, and ensures repeatable results. Built in the USA from hardened steel and vented for safety, it’s an essential upgrade for .308 reloaders using single dies or assembling full-length die sets.
