The Hornady Number 5 Shell Holder is a must-have for adapting your reloading press to use .300 Whisper Magnum cartridges. Designed with versatility in mind, this tool fits seamlessly with Hornady presses and most other common makes, ensuring you can rely on it for a broad range of applications. The Hornady Number 5 Shell Holder stands out with its precise alignment features, guaranteeing accurate and consistent reloading performance. The rounded edge on the shell holder mouth facilitates smooth and easy operation, enhancing your reloading experience. Furthermore, this shell holder is compatible with standard dies, the Hornady Handheld Priming Tool, and the Cam-Lock Case Trimmer, making it an exceptionally versatile addition to your reloading toolkit. Durable and dependable, the Hornady Number 5 Shell Holder is the perfect choice for those looking to convert their press to use .300 Whisper Magnum efficiently and effectively.