Last post by admin - February 11, 2021, 08:57:33 PM
Today I have uploaded a freshly compiled version of BfX. Furthermore I have added a BfX_Bcs(density of bullet;diameter of bullet) to compute the ballistic coefficient of spherical (round) bullets. These can be used in combination with the GS drag function. The new version of Getting Started.xls(x) illustrates computations with BfX_Bcs.
E.g the velocity of a .50 inch lead round ball, with muzzle velocity 2012 fps at 100yd: =BfX_Vx("fps";2012;"fps";100;"yd";BfX_Bcs(0,41;"lb/in^3";0,5;"in");"GS") (which would result in 1046 fps)
I've made a very simple excel file in order to calculate Velocity, Energy and TOF for shotgun BB's. 1. What is the BB's ballistic coefficient ? Can it be calculated ? 2. Any idea how to make this simple excel file more reliable according to atmospheric conditions and the subsonic, transonic and supersonic region ?