RCBS Precisioneered Dies are for shooters who demand reloads equal to the quality of their guns. The RCBS 10901 is a two-die set intended for reloading bottleneck cases, consisting of a Full-Length Sizer Die with an Expander-Decapping Unit, and a Seater Die with Bullet Seater Plug. Designed specifically for .222 Remington ammunition, this set delivers the precision necessary for consistent, accurate handloads.
The Full-Length Sizer Die brings the case to SAAMI minimum cartridge dimensions and sizes the outside of the case, de-primes and expands the neck to accept the bullet. The die has vents to prevent case damage caused by trapped air and for excessive lubricant. The included Seater Die has a built-in roll crimper to secure the bullet at the same time as it’s seated. Each die is properly hardened and hand polished.
The .222 Remington sizing dies feature tolerances twice as stringent as typical firearms and ammunition for consistent chambering round after round. Standard 7/8 x 14 thread size. Whether loading for precision target shooting or varmint hunting, the RCBS 10901 provides the durability and consistency that reloaders rely on season after season.





