Hey reloaders, if you're looking for a specific Hornady trimmer pilot to keep your reloading process smooth and precise, this Pilot #21 with a .400 diameter is just what you need. It's designed to work with Hornady's Cam-Lock Trimmer system, helping you trim cases to the perfect length with consistency and ease. Made from durable materials, it fits securely and reduces wobble for accurate trimming every time. Whether you're prepping brass for target shooting or hunting loads, having the right pilot makes a big difference. This part number is often referenced as 390941, so you can double-check compatibility with your setup. It's a small but essential component in your reloading bench toolkit. If you've been struggling with uneven case lengths or just want to upgrade your trimming game, this pilot is a solid choice. Keep your brass in spec and your ammo performing at its best. Perfect for DIY reloaders who value precision and reliability in their process. Grab one and get back to crafting those perfect rounds!