While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
For a comparison of 100 yard results produced by a variety of rifles and shooters, see the 100 Yard .22LR Challenge thread. It requires ten-shot groups. See posts #2 and #3 for results.
If I'm just using my cheap but decent ammo and not pulling out all the stops for ultimate accuracy, I'm expecting 2.5" or smaller groups at 100 yards. I try for half that or better with my best setup, rest, ammo etc. But that needs the right range conditions too.