Maybe I'm missing something, but why are shooters looking for data somewhere else instead of just calculating their own BCs based on what they're seeing under their real word conditions? We can all agree that a bullet's BC value is on a spectrum based on a number of variables. If I tell you that the BC of a given bullet is a G7 value of .418 then that's just staring point. If the twist, velocity, atmospherics and flap of a butterfly's wings are different under your conditions then your BC value will be subject to variation too. Either way the shooter will have to make small adjustments to get everything dialed in under a specific set of conditions.
There's a lot of very technical data that a high end lab is capable of collecting, but the only data that matters in the field is what's happening in the field.