Observed arrival · 2026-09-22
GroupLab and the Honest Rifle Group
Free, open-source Windows software that analyzes rifle targets from photographs or scans.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Rifle shooters comparing loads and testing rifle accuracy
- Worth noticing
- Twenty-five built-in target sheets pool one shot per bull and report intervals for mean radius, sigma, CEP, and extreme spread.
Field notes
The workflow uses registration markers and QR codes to carry each sheet's definition, while every hole is tied back to its numbered bull for review. Users can also mark store-bought targets or blank paper by hand after setting a known length. The project distinguishes the functioning current build from unimplemented features such as plain-paper hole detection, Garmin Xero import, and mobile versions.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue