Lee Die Set for .300 H&H Magnum Reloading
Die Lee Limited Production 2-Die Set for Caliber .300 H&H Magnum.
This precision-engineered kit includes two high-grade steel dies specifically designed for the meticulous reloading and resizing of .300 Holland & Holland Magnum cartridges, optimized for metallic and semi-metallic ammunition enthusiasts and professional marksmen.
The set comprises the following components:
Resizing Die: This die is engineered to recalibrate the cartridge case by removing the spent primer and slightly expanding the neck of the brass casing. It ensures consistent case dimensions for reliable chambering and optimal ballistic performance.
Seating Die: Adjustable for precise bullet seating depth, this die allows the projectile to be seated to the exact desired depth within the case neck, initiating the case mouth closure. Careful adjustment is critical to avoid excessive crimping, which can deform the case neck into a rolled shape, potentially compromising cartridge integrity and ballistic consistency.
For applications requiring a robust case mouth crimp, such as lever-action or semi-automatic firearms, it is highly recommended to use the dedicated Factory Crimp Die (Ref. 90970). This specialized die permits a strong, uniform crimp without damaging the brass, ensuring reliable feeding and extraction under rapid cycling conditions.
Additional accessories included:
- Shell Holder: Compatible with standard reloading presses, this component securely holds the cartridge case during resizing and bullet seating operations.
- Powder Measure Scoop: Facilitates accurate and consistent powder charges, critical for maintaining safe and effective ballistic performance.
- Load Data Chart: Provides comprehensive load data, excluding Spanish powder types, to assist reloaders in selecting appropriate powder charges and bullet weights for the .300 H&H Magnum cartridge.
Note: Proper lubrication of the cartridge case is essential prior to resizing to prevent case sticking and ensure smooth die operation, thereby extending the lifespan of both the brass and the dies.
This Lee Limited Production 2-Die Set is an indispensable tool for precision reloaders and hunters seeking to maximize the performance and reliability of their .300 H&H Magnum ammunition through meticulous case preparation and bullet seating techniques.