LOL, not this again. (big sigh) the BCs are static. these are the numbers Bryan Litz has done. Matrix 7mm 190 grain VLD:
G1 BC: 0.673 (average from 3000 to 1500 fps)
G7 BC: 0.344 (good for all supersonic speeds)
His new book will be out shortly with more info on other Matrix bullets. Marshal