I recently got an app on my phone that calculates bullet drop for me (which is awesome), but one of the inputs is "ballistic coefficient". I use PMC Bronze FMJ .223, 55 grain, 3200 fps. All I want to know is one of the following: 1. What is the BC for this exact round; or 2. What number can I use to be reasonably accurate? I just spent 2 hours of my life searching the web to try and find a decent BC calculator and I found out that I need a f'ing degree in astrophysics just figure this out.