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.
Sorry, you'll have to develop loads for your own rifle, as every rifle is a law unto itself. I use Re22, but have worked the loads up very carefully, and my loads may not be safe in your rifle at all.
From there you can just click on Cartridge Loads and find what you are looking for, using both Hodgdon and IMR powders, including some showing 130s at 3500 fps and 150s at a bit over 3200 using IMR7828.