The Lee Precision Large Series 3-Die Set is configured for the .577/450 Martini-Henry cartridge and fits Lee’s Large Series 1 1/4×12 thread presses. The set contains tooling for full-length sizing, bullet seating, and factory crimping, and ships with a shell holder and instructions. It is intended for reloaders preparing and finishing .577/450 Martini-Henry cases.
Key Specifications
- The set is a 3-die set designed for full-length reloading operations.
- The dies use Lee’s Large Series 1 1/4×12 thread standard.
- Cartridge compatibility is listed as .577/450 Martini-Henry.
- Included components are a full-length sizing die, a bullet seating die, and a factory crimp die, plus a shell holder and instructions.
- Intended functions include full-length resizing, seating, and crimping of .577/450 cases.
- The product is manufactured by Lee Precision.
- Catalog classification: Other Reloading Equipment.
This Lee Large Series 3-die set gives handloaders the specific tooling needed to process .577/450 Martini-Henry cases with Large Series threaded presses. Purpose-built and straightforward, the set supports consistent case preparation and seating for reloaders working with historical and large-caliber rifle cartridges.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




