RCBS pioneered and developed 3-Die Sets for straight-wall rifle and 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 taper crimps.
| FireArm | No |
| Die Type | Expander/Taper Crimp Seat |
| Die Series | Straight Walled Cartridges |
| In Set | 3 |
| Caliber | 44 Auto Mag |
