The RCBS .303 British Full Length Die Set (Model 15401) is a two-die set meticulously designed to resize fired cases to SAAMI minimum specifications, ensuring reliable feeding. This set includes:
- A Full-Length Sizer Die with a built-in decapping unit.
- A Seater Die with an integrated roll crimper.
Key Features & Components:
-
Full-Length Sizer Die:
Resizes the entire case, decaps (removes the old primer), and expands the neck to the proper diameter. Features vents to prevent trapped air from damaging cases. -
Seater Die:
Seats the bullet and includes a built-in roll crimper, essential for managing crimp on this rimmed cartridge. -
Construction:
Precision-machined and hand-polished hardened steel for long-term durability. -
Compatibility:
Standard 7/8″-14 thread, making it compatible with most popular reloading presses, such as the RCBS Rock Chucker. -
Storage:
Comes with a plastic storage box and a reloading data label.
Additional Details:
Made from hardened steel, these dies are suitable for bottleneck cartridges and are crafted to meet the high standards of reloaders. With 7/8″-14 thread, they ensure versatility across a wide range of reloading presses.




