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.
If you are shooting the 115gr then yes the 7.5 twist is what you need. BUT IF YOU ARE SHOOTING THE 105 BERGER OR LIGHTER THEN A 1 IN 8 IS THE BETTER CHOICE.