Lee Precision 284 Win Rifle Precision Micrometer Bullet Seat Die

The Lee Precision 284 Win Rifle Precision Micrometer Bullet Seat Die brings repeatable, dependable bullet seating to your 284 Winchester handloads. Whether you're fine-tuning match ammunition for the range or preparing hunting rounds that demand consistency, this die delivers the control serious reloaders expect without the premium price tag. The laser-engraved micrometer thimble reads in thousandths of an inch, making it straightforward to dial in your exact seating depth and return to it shot after shot.

Dead-length seating is the foundation here. The die body contacts the shell holder directly, ensuring uniform seating depth across every round in your lot. That consistency translates to tighter velocity spreads and more predictable ballistics—especially important when you're dialing for precision or hunting at distance. The floating bullet guide keeps the case and bullet in perfect vertical alignment while allowing them to self-center, which means less runout and cleaner seating regardless of case or bullet variation.

The bullet seating stem is machined and burnished smooth, so it handles soft-point, hollow-point, and round-nose bullets without marking or deforming them. An exclusive Lee feature lets you reverse the bullet guide and seat and crimp in a single stroke, saving a die station if your setup or load calls for it. If you're building precision rifle ammunition and want micrometer-grade control over a critical variable, this die earns its place in your reloading bench.

Key Features

• Precision micrometer thimble laser-engraved in 0.001" increments for easy, accurate adjustment
• Dead-length seating system contacts shell holder for uniform seating depth
• Floating bullet guide aligns case and bullet with radial clearance to minimize runout
• Machined and burnished bullet seating stem accommodates most bullet point styles without damage
• Reversible bullet guide allows simultaneous seating and crimping in one stroke
• Infinitely adjustable for custom seating depths

Specifications

Frequently Asked Questions

What makes this die different from a standard bullet seating die?

This is a precision micrometer die, which means you're adjusting seating depth with micrometer-grade control (reading in thousandths of an inch). The dead-length design ensures the die body contacts the shell holder for consistent, repeatable seating depth every time. That level of control helps you build tighter ammunition, especially for precision rifle work.

Can I use this die for both seating and crimping?

Yes. The floating bullet guide is reversible. By unthreading and reinstalling it, you can set up the die for simultaneous seating and crimping in a single stroke—an exclusive Lee feature that saves a die station if your reloading process calls for it.

Will this die damage soft-point or hollow-point bullets?

No. The bullet seating stem is machined and burnished smooth specifically to handle soft-point, hollow-point, and round-nose bullets without marking or deforming them during seating.

What is the floating bullet guide, and why does it matter?

The floating bullet guide holds the case and bullet in perfect alignment while allowing slight radial clearance so they can self-center. This design minimizes bullet runout and ensures clean, consistent seating regardless of minor case or bullet variations—critical for accuracy-focused reloading.