Energy Calculation

Appreciate all the feedback fellas.. Just wanted to know the energy.. Last thing I want to do is be looking at a "smart phone" while hunting. I don't shoot targets.. I just want know where i'm hitting at 25, 30...up to about 60 yards....If the app makes you a better hunter then that's great..

I use a range finder with ballistics, there is one like that on the classified, I range and I get the hold overs and clicks along with the distance. Best tool for hunting... I use the app when building turrets tapes but with my new range finder I'm not building turrets tapes anymore

orion, which range finder are you using?