Lee Precision .308 Win Collet Neck Sizing Die
The Lee Precision Collet Neck Sizing Die sizes only the case neck, leaving the body untouched. This ensures the fire-formed brass maintains its perfect chamber fit. A hardened steel collet squeezes the neck against a precision mandrel, producing a consistently aligned neck with minimal run-out, resulting in tighter groups at the range or in the field.
Because the case body is not stressed during sizing, brass life is extended by approximately ten times compared to full-length sizing. No case lube is required, keeping the bench clean and workflow efficient.
Specifications
| Feature | Detail |
|---|---|
| Caliber | .308 Winchester |
| Function | Collet neck sizing only |
| Material | Hardened steel collet and mandrel |
| Compatibility | Bolt-action rifles only |
| Case Body Stress | None |
Designed for bolt-action rifles. Not recommended for semi-automatic, slide, or lever-action firearms where cases must headspace on the body. Sold as a single die. Pair with a seating die for complete case preparation.
FAQ
Can this die be used on semi-automatic rifles?
Please contact customer service
Does the die require any lubrication?
No case lube is needed.
How does this die extend brass life?
By only sizing the neck and avoiding stress on the case body, the brass retains its integrity and lasts up to ten times longer than with full-length sizing.

Warren Oliver –
This die works smoothly and consistently. I noticed my brass holds up better after several uses. No lube needed and the groups are tighter than before. Great for long-range shooting.
Lisa Short –
Perfect for preserving case integrity. I’ve used it on multiple batches of .308 brass and haven’t seen any neck deformation. The alignment is excellent and my shots are more consistent.
Karen Quinn –
Solid performance. The neck sizing is precise and the die doesn’t damage the case body. I still need to pair it with a seating die, but it’s a reliable tool for neck preparation.
Wanda Grant –
After switching to this die, my brass life has increased significantly. I’ve gone through more cases without needing to replace them. Very satisfied with the results.