The RCBS 11131 Small Base Sizer Die is designed for bottleneck type cases used in tight-chambering semi-automatic, pump or lever-action firearms, resizing cases below SAAMI minimums and reducing the shoulder and body by a few thousandths. The die also de-primes the case, providing a complete sizing solution for .223 Remington ammunition reloaders. This tool helps ensure proper functioning when loading for semi-automatic, pump action and lever action rifles. Not recommended for ammunition used in bolt-action rifles.
The RCBS 11131 delivers precision reloading performance that goes beyond standard full-length sizing. This is a single die that addresses the specific needs of AR platform and other semi-automatic rifle reloaders who require tighter case tolerances. this small base sizer ensures consistent, reliable results.
