Hornady Shell Holder #37 - 5.7x28mm FN/.25 ACP

The Hornady Shell Holder #37 for 5.7x28mm FN and .25 ACP is a precision-machined reloading component engineered for shooters who demand reliable case handling during ammunition assembly. This shell holder is manufactured from solid steel and heat-treated to exacting standards, ensuring consistent performance across high-volume reloading sessions. The robust construction eliminates case slip and binding, critical factors when processing small-diameter cartridges that demand precise alignment.

Designed to integrate seamlessly with Hornady's complete reloading system, this shell holder works with the Handheld Priming Tool, press accessories, and the Cam-Loc system. The compact, efficient design accommodates the 5.7x28mm cartridge—a modern bottleneck round used in FN Five-seveN pistols and select AR-platform rifles—as well as the smaller .25 ACP, enabling versatile loading operations. Precision machining ensures minimal wear on case rims and consistent headspace positioning, which directly impacts cartridge reliability and firearm safety.

This component is essential for handloaders working with the 5.7x28mm, a niche but growing cartridge in tactical and sport shooting communities. Whether you're reloading for a duty weapon, training platform, or specialized competition setup, proper case handling through a dedicated shell holder prevents secondary damage and improves load consistency. The Hornady #37 slot accommodates the specific geometry of these smaller-diameter cases where generic or universal holders introduce unacceptable play.

Hornady's reloading components have earned respect among law enforcement armorers and competitive shooters for their dimensional accuracy and durability. The #37 shell holder is a foundational piece—its performance often determines the success of an entire reloading session. Proper case retention during priming, powder charging, and bullet seating directly influences ammunition quality and shooter confidence downrange.