This two-die set is for bottleneck type cases used in tight-chambering semi-automatic, pump or lever-action rifles. It consists of a Small Base Sizer with an Expander-Decapping Unit and Regular Seater Die with Seater Plug. The sizer resizes cases below SAAMI minimums, reducing the shoulder and body by a few thousandths. It also de-primes the case. The included Seater Die has a built-in roll crimper to secure the bullet at the same time it's seated. To seat bullets without crimping, simply unscrew the die until the crimp ring no longer engages the case mouth.
Specifications:

Type	Small Base Die Set
Caliber	223 Remington
Die Type	Small Base Sizer and Seater Die
Die Series
In Set	2
Metal Type
Adapt to Mfg
Shell Holder
Shell Holder Cap