Just wondering when berger lowered the bc on their bullets. I was on their site and they state a 140gr 6.5 has a bc of .595. I havent bought any in awhile and all the boxes I have say .640 What made them lower the bc, through testing did they decide it wasnt as high as they have stated in the past. I shoot alot of 130 normas .264, norma says they have a .540 bc but through shooting them its been closer to .60 to make the trajectory work out. Just wondering how different companys come up with there bcs and how legitimate most are.