The Ultra Micrometer Seater Die is a non-crimping seater die (with the exception of the 30-30) that ensures perfect alignment of the bullet and case while the bullet is press-fit seated. This precise alignment guarantees consistency and accuracy with every round. Featuring a built-in micrometer, this die allows you to adjust the bullet seating depth to your exact specifications. Once you've seated the bullet close to the desired depth, simply measure and adjust the micrometer stem up or down to fine-tune the seating depth. This ensures each cartridge will be the exact length you need, delivering reliable and accurate ammunition for your shooting needs.