
Availability: In Stock
The Lee Precision 303 British Rifle Precision Micrometer Bullet Seating Die gives handloaders the kind of repeatable, uniform seating depth that separates good ammunition from match-grade rounds—without the premium price tag. Built around a precision micrometer adjustment system with clearly laser-engraved markings (each division equals one-thousandth of an inch), this die lets you dial in your exact seating depth and return to it shot after shot, die after die. Whether you're working up loads for a classic .303 British or pushing precision at the range, dead-length seating with the shell holder contact method ensures consistency that matters.
The floating bullet guide is where this die earns its reputation. By allowing the case and guide to align independently with the bullet seater screw, it minimizes bullet runout—the kind of variation that degrades accuracy downrange. The guide itself is reversible: unthread it and flip it to enable simultaneous seating and crimping in a single stroke, a feature rarely found outside of Lee's lineup. The machined and burnished seating stem handles nearly any bullet point style without deformation or marking, so you're not limited to a narrow range of bullet designs.
If you reload .303 British and want to tighten your groups without breaking the budget, this micrometer seating die delivers the precision adjustment and build quality that serious handloaders expect. It's infinitely adjustable, simple to set up, and built to last through thousands of rounds.
| Cartridge | .303 British |
| Product Type | Rifle Precision Micrometer Bullet Seating Die |
| Micrometer Divisions | 0.001 inch |
| Die Body Contact Method | Dead-length (shell holder contact) |
| Bullet Guide | Floating, reversible |
Yes. The floating bullet guide is reversible—simply unthread and reinstall it to enable simultaneous seating and crimping in one press stroke. This is an exclusive feature of Lee's precision seating dies.
The machined and burnished seating stem is designed to seat nearly any bullet point style without damage or marking, giving you flexibility across a wide range of .303 British loads.
The precision micrometer is laser-engraved with divisions representing one-thousandth of an inch (0.001"), allowing you to dial in exact seating depth with the same precision you'd expect from a depth micrometer. The dead-length seating method with shell holder contact ensures uniform results from round to round.
The floating guide, with its radial clearance, allows the case and bullet to align perfectly with the seating screw independent of any variance between them. This alignment reduces bullet runout, which translates to tighter groups and more consistent ballistics downrange.

SKU: 197561485 • Weight: 0.61oz





Availability: In Stock
The Lee Precision 303 British Rifle Precision Micrometer Bullet Seating Die gives handloaders the kind of repeatable, uniform seating depth that separates good ammunition from match-grade rounds—without the premium price tag. Built around a precision micrometer adjustment system with clearly laser-engraved markings (each division equals one-thousandth of an inch), this die lets you dial in your exact seating depth and return to it shot after shot, die after die. Whether you're working up loads for a classic .303 British or pushing precision at the range, dead-length seating with the shell holder contact method ensures consistency that matters.
The floating bullet guide is where this die earns its reputation. By allowing the case and guide to align independently with the bullet seater screw, it minimizes bullet runout—the kind of variation that degrades accuracy downrange. The guide itself is reversible: unthread it and flip it to enable simultaneous seating and crimping in a single stroke, a feature rarely found outside of Lee's lineup. The machined and burnished seating stem handles nearly any bullet point style without deformation or marking, so you're not limited to a narrow range of bullet designs.
If you reload .303 British and want to tighten your groups without breaking the budget, this micrometer seating die delivers the precision adjustment and build quality that serious handloaders expect. It's infinitely adjustable, simple to set up, and built to last through thousands of rounds.
| Cartridge | .303 British |
| Product Type | Rifle Precision Micrometer Bullet Seating Die |
| Micrometer Divisions | 0.001 inch |
| Die Body Contact Method | Dead-length (shell holder contact) |
| Bullet Guide | Floating, reversible |
Yes. The floating bullet guide is reversible—simply unthread and reinstall it to enable simultaneous seating and crimping in one press stroke. This is an exclusive feature of Lee's precision seating dies.
The machined and burnished seating stem is designed to seat nearly any bullet point style without damage or marking, giving you flexibility across a wide range of .303 British loads.
The precision micrometer is laser-engraved with divisions representing one-thousandth of an inch (0.001"), allowing you to dial in exact seating depth with the same precision you'd expect from a depth micrometer. The dead-length seating method with shell holder contact ensures uniform results from round to round.
The floating guide, with its radial clearance, allows the case and bullet to align perfectly with the seating screw independent of any variance between them. This alignment reduces bullet runout, which translates to tighter groups and more consistent ballistics downrange.
SKU: 197561485 • Weight: 0.61oz
