Hornady Large Primer Pocket Reamer – Case Prep Tool
S118641
- Removes military crimp from large primer pockets in once-fired mil-spec rifle brass
- Uniforms pocket depth for consistent primer seating across the batch
- Compatible with Hornady Cam-Lock case-prep tool and Lock-N-Load Case Prep Centre
- For large primer pockets — large rifle and large pistol calibres
- Cutting reamer insert, not a cleaning brush — removes the crimp, not just carbon residue
- Use as part of a thorough case-prep routine — ream the crimp, then clean the pocket before seating new primers
- Sold as the reamer head; handle/mandrel sold separately or supplied by the case-prep tool
The Hornady Large Primer Pocket Reamer is a case-preparation tool head designed for reloaders working with military-surplus brass. Many large-rifle cases — particularly once-fired 7.62×51 NATO and similar mil-spec brass — have a staked or swaged crimp around the primer pocket that prevents new primers from seating cleanly. This reamer cuts away that crimp and simultaneously uniforms the pocket depth, ensuring every large primer seats to the same level and ignites reliably. The result is consistent primer seating depth across the batch, which is a meaningful contributor to accurate, repeatable loads. The reamer head fits Hornady's Cam-Lock case-prep tool system and the Lock-N-Load Case Prep Centre, making it straightforward to swap between operations at the bench. It is a cutting insert, not a cleaning brush — use it before or alongside a primer pocket cleaner as part of a thorough case-prep routine. Suitable for large rifle and large pistol primer pockets.
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