The Ultra Micrometer Seater Die is a non-crimping style die (except for the 30-30) that ensures the bullet and case are perfectly aligned during the press-fit seating process. This precise alignment guarantees consistency and accuracy with every round. Equipped with a convenient micrometer, the die allows you to adjust the bullet seating depth to your exact specifications. Once you have seated the bullet close to the desired depth and measured it, simply adjust the micrometer stem up or down to fine-tune the depth, ensuring that each cartridge is seated to the precise length you need for optimal performance and reliability.