Lee Precision 243 Wssm Rifle Precision Micrometer Bullet Seating Die

The Lee Precision 243 WSSM Rifle Precision Micrometer Bullet Seating Die brings accuracy and repeatability to your reloading bench without the premium price tag. Built for reloaders who demand consistency shot after shot, this die uses a micrometer adjustment system to dial in exact bullet seating depth—critical for cartridge function, accuracy, and case longevity. Whether you're loading match rounds or hunting ammunition, precise seating depth control is non-negotiable, and this die delivers it in an intuitive, easy-to-read format.

The micrometer thimble is laser-engraved with increments representing one-thousandth of an inch, so you can dial adjustments with confidence and repeatability. Once you establish your preferred seating depth, you'll nail it every time. The floating bullet guide keeps your case and bullet perfectly aligned throughout the seating process, minimizing runout and the risk of bullet damage or marking on premium projectiles. This alignment feature is especially valuable when working with delicate match-grade or bonded hunting bullets.

A distinctive advantage of this die is its reversible floating guide—you can unthread it and reinstall the die to enable simultaneous seating and crimping in a single stroke, a convenience feature often reserved for much pricier equipment. The bullet seating stem itself is machined and burnished to handle virtually any bullet point style cleanly, from hollow points to boat tails. When used as a dead-length seating die, the die body contacts the shell holder, ensuring uniform seating depth from round to round. That precision is what separates consistent, reliable ammo from mediocre handloads.

Key Features

• Laser-engraved micrometer thimble with 0.001-inch divisions for precise, readable adjustments
• Floating bullet guide that aligns case and bullet for minimal runout
• Machined and burnished seating stem compatible with nearly all bullet styles without damage
• Reversible guide design allows simultaneous seating and crimping in one operation
• Dead-length seating for uniform seating depth when die body contacts shell holder
• Infinitely adjustable for full control over seating depth

Specifications

Frequently Asked Questions

What caliber is this die made for?

This die is specifically designed for the .243 WSSM cartridge.

Can this die seat and crimp at the same time?

Yes. The floating bullet guide is reversible—you can unthread it and reinstall the die to enable simultaneous seating and crimping in a single reloading stroke.

How readable are the micrometer adjustments?

The micrometer thimble and body are laser-engraved with divisions representing one-thousandth of an inch, making it easy to read precise adjustments and reproduce your seating depth reliably.

Will this die damage or mark my bullets?

The bullet seating stem is machined and burnished to seat nearly any point style bullet without damage or marking, even delicate match-grade or bonded hunting projectiles.