Lee Precision 338 Lapua Rifle Precision Micrometer Bullet Seating Die

The Lee Precision 338 Lapua rifle precision micrometer bullet seating die brings controlled, repeatable seating depth to your long-range reloading bench. If you're loading match-grade ammunition for precision rifle competitions or hunting applications where bullet seating depth directly affects accuracy, this die offers the micrometer adjustment and floating bullet guide geometry that serious reloaders depend on. Lee's approach prioritizes function and reliability over unnecessary cost, making precision seating accessible to handloaders committed to consistency.

The heart of this die is the laser-engraved micrometer thimble, readable in thousandths of an inch just like a precision depth gauge. That means you can dial in your seating depth with confidence and repeatability—critical when you're chasing tight groups at distance. The body makes contact with your shell holder when seating, anchoring the reference point and ensuring uniform depth across your entire batch. The floating bullet guide does the real work: it holds the case mouth and bullet in perfect alignment while the guide itself finds center, which dramatically reduces bullet runout. Runout control matters. A bullet traveling down the bore off-center costs you velocity consistency and group size.

The seating stem is machined and burnished to handle nearly any bullet point style without damage or marking—whether you're loading hollow points, boat tails, or match-grade rounds. And because the floating guide is reversible, you can unthread it and reinstall it to combine seating and crimping in one stroke, a feature unique to Lee's design. For 338 Lapua handloaders, that flexibility is genuine value.

Key Features

• Laser-engraved micrometer thimble with thousandths-of-an-inch gradations for precise, readable seating depth adjustment
• Floating bullet guide that centers the case and bullet while reducing runout
• Dead length bullet seating with body contact on shell holder for uniform seating depth
• Machined and burnished seating stem compatible with most bullet point styles
• Reversible floating guide allows simultaneous seating and crimping in one operation
• Infinitely adjustable for fine-tuning seating depth

Specifications

Frequently Asked Questions

Is this seating die compatible with my 338 Lapua reloading press?

This is a 338 Lapua–specific die designed for standard reloading presses that accept Lee dies. Verify that your current press is compatible with Lee dies before purchasing.

Can I use this die to both seat and crimp in one step?

Yes. The floating bullet guide is reversible—unthread it and reinstall it to enable simultaneous seating and crimping. This is an exclusive feature to Lee's design.

How accurate is the micrometer adjustment for seating depth?

The laser-engraved micrometer thimble reads in thousandths of an inch, providing the same precision you'd expect from a depth micrometer. The die's floating guide and body contact on the shell holder ensure uniform, repeatable seating depth across your entire batch.

Will this die mark or damage my bullets?

The seating stem is machined and burnished to seat nearly any bullet point style without damage or marking.