The Lee Precision Classic .510 Diameter Bullet Sizing Kit is a lube-and-size solution for cast bullets in the .510-inch class. It lets you lubricate and size cast bullets and can also seat and crimp gas checks. The sizer die uses standard 7/8 x 14 threads and is intended for use on single-stage presses only. Bullets are pushed through the sizing die nose first and sized projectiles are captured in the included container.
Key Specifications
- Designed for bullets with a diameter of .510 inches.
- Includes a sizer die, sizer punch, and collection case.
- The sizer die uses 7/8 x 14 threads to fit standard reloading presses.
- Compatible with single-stage presses (intended use only).
- Primary function is to size cast bullets and to seat/crimp gas checks.
- Intended for use with cast bullets and related gas checks.
- Constructed from steel and finished in silver.
- Supplied as 1 kit containing all listed components.
- Package weight is listed as 95 oz.
Simple, dependable, and focused on function, this kit streamlines lube-and-size tasks for .510 cast bullets. The push-through sizing method and included components make it a practical addition to a dedicated single-stage reloading workflow for users who need consistent sizing and reliable gas-check seating.









