Within Range / Getting started
Read a result, step by step.
Meet Alex: a fictional hunter looking back at a recent practice session and trying to understand what the calculator can tell them.
Fictional example — not your result. This is a reading guide, not a calculated scenario or a recommended setup. It does not fill in the calculator or save a practice record.
Step 1 / Where the information comes from
Separate observations from assumptions.
Alex has a measured practice group and its shot count. Those are observations from one session. A listed manufacturer velocity, by contrast, is published reference information; it is not a measurement from Alex’s rifle.
- Recorded by Alex
- A recent group, the number of shots, and the position used.
- Published reference
- The selected load’s specifications and the species’ vital-zone proxy, with sources and limitations.
- Estimated or selected
- Conditions, uncertainty and the confidence target. A chosen target is a preference, not a validated ethical threshold.
Look for: which values you measured, which you estimated, and which came from a source.
Step 2 / What the headline means
A model boundary has a limited meaning.
Illustrative wording — no calculation performed
Below the selected placement-confidence target at the distance entered.
In this fictional example, the model’s estimate falls below Alex’s chosen target. That compares a modelled placement probability with a preference. It does not establish a safe distance, predict a humane outcome, or give permission to take a shot.
The placement curve determines the calculator’s confidence boundary. The energy curve is shown for context only; being above that reference does not establish terminal performance.
Look for: the stated target, the explanation beside the headline, and the chart’s text table. Read the two curves according to their different roles.
Step 3 / Read what sits behind it
The assumptions are part of the result.
Alex opens the assumptions and evidence panel to check that the inputs match the intended scenario and to see where the reference data came from.
- Check the inputs and units. An entry error can still produce a plausible-looking number.
- Read the source limitations. A vital-zone proxy is a simplified modelling circle, not an anatomical guide for every animal or presentation.
- Read what is missing. Day-to-day variation, cold-bore offset, time pressure and other field errors are not fully represented by this placement model.
Look for: assumptions you cannot support with your own information. Changing a value simply to make the result pass does not provide new evidence.
Step 4 / Understand the evidence label
A practice label describes the record.
Alex entered a group manually and has not linked saved practice evidence. Field Evidence therefore says “No linked practice evidence”. That describes what the app has available; it is not a judgement of Alex’s ability.
When comparable saved groups are linked, labels such as Limited, Developing and Stronger describe group quantity. They are not grades, certifications or proof of a humane shot. A single group also does not establish repeatability across different days and conditions.
Look for: the number of comparable groups, the position and the date of the most recent relevant practice.
Try it with your own information.
Use your own recorded observations, read the assumptions, and treat the output as a limited model. No example values will be carried over.