Snap the Group. See the Truth.

1. Select reference markers

Choose the reference marker pattern that matches the corner stickers on your printed target. The QR code on the target opens this page with the right preset already selected.

Distance to target (m)

Auto-filled from the target QR. Required for MOA + Terra-Analyse normalisation.

2. Load target photo

Use a photo with all 4 Terra-Impact reference markers visible near the corners of the target.

Upload Image Take Photo

3. Lock source corners?

If the auto-detected reference markers look right, lock the source so we can add detect shots straight away. Otherwise leave it unlocked and use fine-tune to nudge corners.

Source not locked. Open fine-tune below if you need to adjust corners.

4. Fine tune corner markers

After markers are detected or placed, fine tune each corner by offset in millimetres without clicking the source photo again. Use 1 mm increments. Positive X moves right, positive Y moves down. Large tap controls make mobile adjustment easier.

X0mm

Y0mm

5. Expected shots & detection

Tell Terra-Impact how many rounds you fired. The detector will keep the highest-probability holes that match this count. Clicking on the fine-tune at different locations will often find a result.

Rounds fired Leave blank to keep all detected impacts.

Threshold fine-tune

Tap Add shot then click on the rectified target to place impacts, or tap Delete shot then click a shot to remove it.

No cold bore

First detected shot is auto-tagged as the cold-bore. Press the button to cycle the cold-bore tag through the other shots. Tick "No cold bore" if this group has no cold-bore shot.

6. Rectified target

Tap the lock pill to prevent accidental changes.

Shots counted

Group size

Measured through centres

POI X offset

Average impact vs aim point centre

POI Y offset

Average impact vs aim point centre

Cold bore POI X

Cold-bore shot vs aim point

Cold bore POI Y

Cold-bore shot vs aim point

Source photo

Load a target photo to begin.

The loaded photo is shown here with detected reference markers (numbered 1–4 in different colours). Use Rotate if your camera saved the photo in the wrong orientation. Fine-tune corner offsets in section 4 if any marker isn’t centred on its sticker.