GROUPLAB
Know what your rifle really shoots.
Photograph any target. GroupLab measures the group and gives every figure with the range it could really be.
GPL-3.0 · WINDOWS · MACOS · LINUX · ANDROID · IPHONE AND IPAD BETA
Photograph any target. Every figure comes with the range it could really be.
GET IT FOR ANDROID IPHONE AND IPAD BETAFive shots are a hint. GroupLab tells you how big a hint.
A small group is mostly luck. Every figure here comes with the range it could really be, so you know when to shoot more and when to stop.
Finds the holes
It reads the sheet, finds each hole and gives it to its bull. You check only the few it is unsure of.
Every figure with its range
Mean radius, CEP, sigma and the rest, each with how big it could really be, and why.
Compare loads honestly
Two loads side by side, and a plain answer when the data cannot yet tell them apart.
Hit probability
The chance of a hit on a plate or a ring at your distance, worked out from your own group.
Several sheets, one group
The sheets of a set pool into one group, each sheet in its own color.
Sessions and a one-page report
Every result kept by load, date and time, and one dated page to print or share.
No bragging numbers.
A
Free and open source
GPL-3.0. Every line of how a figure is worked out can be read, checked and built yourself.
B
The range, not just the number
A figure without its range invites a story. GroupLab shows how big each one could really be.
C
On what you already own
Windows, macOS, Linux and Android, with iPhone and iPad in a public beta.
Today GroupLab is test builds, rebuilt after every change that passes its tests, so one may be broken; the Windows and Linux downloads are unsigned. Not built yet: hole detection on plain paper. What to expect, and the full status on GitHub.
Measure it at the bench.
Point the phone at the sheet, flat on the table or straight on at the backer, and read the group before you walk back.
START MEASURING.
Free · open source