The Lee Precision Classic Bullet Sizing Kit .451 is a lube-and-size solution for cast bullets. It lubricates and sizes bullets, seats and crimps gas checks, and captures sized bullets in a containment box for easy collection. The sizer die uses standard 7/8×14 threads and is intended for use on single-stage reloading presses; lubricant and press are sold separately.
Key Specifications
- The kit is sized for .451 inch diameter cast bullets.
- The sizer die features 7/8×14 threads to fit standard reloading presses.
- Intended compatibility is with single-stage presses only.
- The kit includes a sizer box, sizer punch, and sizer die.
- Constructed from steel and plastic components.
- The product color is listed as red.
- The kit captures sized bullets in a special container for collection.
- The listed weight is 95 oz.
- The listed overall dimensions are 3.30 x 3.45 x 4.80 inches.
- Lubricant is not included; Lee Liquid Alox and similar lubricants are sold separately.
This kit provides a straightforward, mechanic-focused solution for reloading cast bullets to .451 diameter and for seating gas checks on single-stage presses. Its standard-threaded sizer die and included punch simplify integration into a traditional reloading bench, making consistent sizing and gas-check seating repeatable and controlled for handloading workflows.
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.


