The Ultra Micrometer Seater Die is a precision tool that ensures perfect alignment of the bullet and case during the seating process, making it ideal for creating consistent, high-quality ammunition. This non-crimping style die (except for the 30-30) securely holds both the bullet and case in perfect alignment while the bullet is press-fit seated, eliminating any misalignment. A built-in micrometer allows for precise adjustment of the bullet seating depth to your exact specifications. After initially seating the bullet close to the desired depth, simply measure it and adjust the micrometer stem to achieve the precise length needed for consistent, reliable performance with every round.