RCBS 11103 Series A Small Base Die Set, 223 Remington Made of the highest quality materials Hunting reloading dies Another quality Bushnell product Usually required for reloading ammunition to be used in automatic, semi-automatic, pump, slide and some lever-action rifles These dies size the body of cases somewhat smaller in diameter and also set the shoulder back slightly more than a Full-Length Sizer Die Not recommended for ammunition used in bolt-action rifles Small Base Set contains Small Base Sizer with Expander-Decapping Unit and Regular Seater Die with Seater Plug