I just finished my new website http://www.shooterscalculator.com
that you might find useful. I started it just for my own use but it turned out quite well and I'm proud of it and think you guys can find it very useful.
Here is a preview of it in action comparing rimfire cartridges:
Here is a link to the page that shows the graph and drop charts for each cartridge: http://www.shooterscalculator.com/ballistic-trajectory-chart.php?t=f630255c
You can also calculate the muzzle energy, PBR, and recoil. Here is an example using the various rimfires.
Here is the recoil energy of various rifles:
Anyways let me know how you like it and how I can make it better for my fellow shooters