Click your point of aim, calibrate scale against two known reference points, then click each shot hole. Get extreme spread, mean radius, SD from POA, and a ready-to-dial windage/elevation zero adjustment in MOA or MIL — right from a photo of your target. Free to use, no account required.
LRS GROUPANALYZERDrop a target photo to begin
⊕
DROP TARGET IMAGE
tap to browse · JPG · PNG · WEBP
Use a grid mark or known ring diameter to calibrate scale.
POA
Centroid
Ext. Spread
Scale
100%
1
POINT OF AIM
Click bullseye
2
REFERENCE SCALE
Click 2 points
3
SHOT HOLES
Click each hole
Group Measurements
Shots—
Extreme Spread
—
Mean Radius
—
SD from POA
—
Center Offset From POA
Horizontal—
Vertical—
ZERO ADJUSTMENT
Windage—
Elevation—
Description (optional)
Saved On This Device
No local sessions saved yet.
Found this useful?
Want this session tracked over time? Subscribers can tag a saved session to a rifle and load, pool sessions together into a composite mean radius and SD for a far larger sample size than any single range trip. Pull load data from the Load Development Lab and have all your rifle, load, and accuracy info all in one place.
Subscribe to tag sessions to a rifle and load, pool them over time into a composite mean radius and impact SD for a much larger sample size than any single range trip, and reuse saved results directly in the Load Development Lab.
Rifle & load profilesCloud sync across devicesComposite mean radius & SDLong-term trend trackingImport into Load Development Lab
