The Hornady Neck Turning Tool Mandrel in .264/6.5mm (part no. 391919) is built specifically for use with Hornady’s Case Neck Turning Tool. Slipped inside the case neck, the mandrel supports the brass from the inside while the turning tool removes material from the outside, keeping the case perfectly centered so the wall comes out even all the way around. Because the mandrel has to match the caliber you’re working with, Hornady offers it in multiple sizes, and this is the .264/6.5mm version. Benchrest and precision reloaders who chase uniform neck wall thickness treat a correctly sized mandrel as non-negotiable.

Key Specifications

• Caliber-specific mandrel sized for .264/6.5mm cases.
• Built to work with the Hornady Case Neck Turning Tool for accurate alignment.
• Supports the case from the inside for uniform neck wall thickness when turning.
• Reduces neck-wall variance that can throw off bullet release consistency.
• Sized for one caliber only, so it centers the case precisely with no play.

Frequently Asked Questions

Do I need this mandrel for every caliber I turn? Yes — the mandrel has to match your case caliber to keep the neck properly centered and aligned during turning.

What tool does this mandrel work with? It’s designed for the Hornady Case Neck Turning Tool, supporting the case from the inside while you turn the neck wall from the outside.

Buy the Hornady Neck Turning Tool Mandrel, .264/6.5mm

Get uniform neck walls and more consistent tension across your brass. Order from our Lubbock, Texas gun shop for fast, insured shipping, and browse the rest of our reloading equipment selection.