- Create a distinct identity when rifle, barrel, ammunition lot, suppressor state, zero, or measured velocity changes materially.
- Use names another person—or you six months later—can distinguish without opening every record.
- Preserve the last verified profile before testing a new coefficient, velocity, offset, or environmental assumption.
- Record why a revision exists and the observation that justified it.
- Retire confusing experiments from active use without erasing the evidence needed to understand old cards or exports.
Expected result
The active profile can be traced to one reproducible rifle-and-ammunition configuration and one understandable revision path.