So in my understanding, BC usually goes up at higher velocities say in the jump from 2000 to 2500 fps and up again from 2500 to 3000 fps( like Sierra who states BC values at certain vrlocity) I have not, however, seen BC values for >3500 fps.

does BC of a bullet continue to go up from say 3000 fps to 3500 or 4000 or 4500 fps? Or do BC values platoe?

shooting 53 gr vmaxs with a .29 G1 BC , there not dropping as much as my calcs say, seeing if I'm off on a variable or if the BC is higher than I thought due to the extreme velocity of a 22-250 ai?

thanks!