Lyman Primer Pocket Reamer - Large

The Lyman Primer Pocket Reamer (Large) is a purpose-built reloading tool designed to remove military crimps and clean up rough metal edges from large primer pockets in spent brass. Sized for large primers, it is the standard solution for prepping military-surplus and range brass before reloading.

The reamer features a steel cutter head that shaves the crimp ring left by military-spec primers, restoring a uniform pocket for reliable primer seating. An ergonomic plastic handle provides a comfortable grip and good control as the tool is turned by hand into the primer pocket.

Use this tool as part of your standard brass-prep workflow: simply insert the cutter into the primer pocket and twist until the crimp and rough metal are removed. Compact and lightweight at roughly 1 oz, it tucks neatly into any reloading bench drawer or range bag.