Sentinel Works Zeroing Offset Calculator

The Sentinel Works Zeroing Offset Calculator was developed to help shooters achieve an accurate preliminary zero regardless of the distance available to them. By accounting for factors such as desired zero distance, sight height over bore, and available shooting distance, the tool generates a printable 1:1 scale target with a calculated point of impact offset to simplify the zeroing process. Designed for use with rifles, pistols, and optics-equipped firearms, the calculator allows shooters to establish a close-range zero and significantly reduce the time, ammunition, and guesswork required when confirming their final zero at distance. This tool was created to provide the firearms community with a practical, easy-to-use resource that bridges the gap between limited training space and real-world shooting performance.