RCBS 17601 Full-Length 2-Die Set .300 Rem Ultra Mag Group A

The RCBS 17601 Full-Length 2-Die Set delivers precision reloading capabilities specifically engineered for .300 Remington Ultra Magnum cartridges. This Group A die set provides consistent case preparation and bullet seating for magnum rifle loads that demand accuracy at extended ranges.

What Makes This Different

RCBS constructs these dies from hardened steel with precise tolerances that maintain case dimensions through multiple reloading cycles. The full-length sizing die features an expander ball system that ensures uniform neck tension, while the bullet seating die includes a built-in roll crimp function. This combination produces ammunition with consistent overall length and proper case mouth preparation for reliable feeding in bolt-action and semi-automatic rifles.

Key Features

• Full-length sizing die with expander ball for uniform case preparation
• Bullet seating die with adjustable seating depth and roll crimp
• Hardened steel construction with precision-ground surfaces
• Standard 7/8"-14 threads fit most single-stage and turret presses
• Includes shell holder #4 for proper case head support
• Group A classification for standard magnum rifle cartridges
• Compatible with RCBS lock rings and accessories

This die set handles the substantial case capacity and belt dimensions of the .300 Remington Ultra Magnum effectively. The full-length sizing operation returns fired cases to SAAMI specifications while the seating die accommodates bullets from 150 to 220 grains. Hunters and long-range shooters benefit from the consistent cartridge overall length this set produces, which translates to reliable magazine feeding and consistent chamber positioning.

Technical Specs

• Caliber: .300 Remington Ultra Magnum
• Die type: Full-length sizing and bullet seating
• Thread specification: 7/8"-14 TPI
• Material: Hardened tool steel
• Finish: Black oxide coating
• Includes: Shell holder #4, load data access
• Group classification: A (standard magnum rifle)
• Country of origin: USA

RCBS backs this die set with their reputation for manufacturing consistency and dimensional accuracy. The .300 Remington Ultra Magnum requires precise reloading techniques due to its large case capacity and magnum pressures, making quality dies essential for safe and accurate ammunition production.