The Ultra Micrometer Seater Die is a non-crimping style seater die (except for the 30-30) that ensures perfect alignment between the bullet and case during the press-fit seating process. This alignment guarantees consistent and accurate seating every time. The die is equipped with a convenient micrometer that allows you to adjust the bullet seating depth to your exact specifications. Once you have seated the bullet close to the desired depth, simply measure it and adjust the micrometer stem up or down to achieve the precise length needed. This ensures that each cartridge is seated to the exact specifications you require.