Built for 338 Winchester handloaders who neck-size rather than full-length resize, the Lee Precision 338 Winchester Collet Neck Sizing Die (part no. 91023) uses a collet and mandrel to squeeze the case neck back to size without working the body or shoulder. That’s a meaningful difference from a standard full-length die: less brass working means longer case life, and this design needs no case lube at all. It’s best suited to brass that’s already been fire-formed to the same rifle’s chamber, since it doesn’t correct body dimensions the way a full-length die does. Reloaders chasing extra brass life or a tighter neck-sizing routine in 338 Winchester reach for this die specifically.

Key Specifications

• 338 Winchester is the caliber this collet neck die is machined for.
• Neck-only resizing squeezes the case neck around a mandrel without working the case body or shoulder.
• No case lube required is a direct result of the collet design, unlike a standard steel sizing die.
• Extended brass life comes from working the case less than a full-length die does.

Frequently Asked Questions

Does this die resize the full case? No, it’s a neck-only die. It squeezes the case neck around a mandrel and never touches the case body or shoulder.

Do I need case lube with this die? No, the collet design doesn’t require case lube, unlike a standard full-length sizing die.

When should I neck-size instead of full-length size? When reloading brass fired in the same rifle you’ll shoot it in again; neck-sizing works the case less and extends brass life.

Buy the Lee Precision 338 Winchester Collet Neck Sizing Die

Order the Lee Precision 338 Winchester Collet Neck Sizing Die from our Lubbock, Texas gun shop for fast shipping to your bench. It is a great way to stretch brass life on fire-formed 338 Winchester cases, and browse the rest of Lee Precision‘s reloading dies lineup to round out your press setup.