The Lee 577 Snider Large Series (1-1/4-12 thread) 3-Die Set is specifically designed for reloaders using the Classic Cast Press. This set includes a Full-Length Sizing Die to restore brass to factory-new dimensions, a Powder Thru Expander Die for adding powder while expanding the case neck and a Bullet Seating Die for precise seating of your bullets. The set also includes a #22 Shell Holder, ensuring compatibility with a wide range of cases. Detailed instructions are provided to guide you through the reloading process. This die set is ideal for reloading 577 Snider cartridges, particularly when working with mixed range brass, ensuring consistent results and reliable performance.