RCBS 23812 3-DIE CARBIDE DIE SET 500 S&W SPL./500 S&W MAGNUM

RCBS pioneered and developed 3-Die Sets for straight-wall pistol cases. The Carbide Sizer Die sizes the case and de-primes (the carbide sizer ring eliminates the need to lubricate). The Expander Die expands the case to the proper diameter to accept the bullet, and it imparts case mouth flare/bell for bullet feeding. The Seater Die seats the bullet and roll crimps.