RCBS Neck Expander Plug .338 Cal - 39877

This RCBS Neck Expander Plug is a replacement component designed for use with RCBS Neck Expander Dies in .338 caliber. The plug enables expansion of the case neck and flaring of the case mouth in a single step, which is essential when reloading cast bullets. Compatible with various cartridge dimensions and streamlines the reloading process.