Lyman Case Prep Primer Pocket Reamer Small

The Lyman Case Prep Primer Pocket Reamer in Small is a hand-held case preparation tool built to remove military crimps and rough metal edges from small primer pockets in brass cartridge cases. Military-surplus and once-fired cases typically arrive with a staked crimp around the primer pocket that must be cut away before the case will properly seat a new primer, and this reamer is designed to do exactly that with a straightforward hand-twist operation.

The cutting head is steel while the body features a molded plastic handle in Lyman's signature orange and gray color scheme for a comfortable, secure grip. At just 1 oz, the tool is light and easy to control during repetitive case-prep work. The Small designation indicates this reamer is sized for small primer pockets, making it the correct choice for cartridges that use small primers.

To use, the reamer is simply inserted into the primer pocket and twisted by hand; the cutting edges shave away the crimp and any burrs, leaving a clean, uniform pocket ready for priming. It's an essential first step in any reloader's case-prep routine, particularly when working with military brass, and pairs naturally with the rest of Lyman's case-preparation lineup.