BC numbers for 142 long range accubond

[Bullet bumper]

First I want to thank everyone for you input, second I think I'm just going to go with a BC of around .61 and see how that plays out. It is really disappointing that Nosler didn't really make an effort.to get the correct BC out rather than inflate it for marketing. I still love the looks of the bullet though.
Thanks all.

How it works is they generate a whole long list of BC's at different velocities then look along the list for that one big number and that's the one they quote . It's technically not telling any lies but not such a good average over the usable trajectory . No single BC is a good predictor really . 3 BC's taken at three separate velocity boundaries is better .