Where to find bullet BC numbers?

[Roktoys84]

I'm trying to put together some drop charts for some new ammo I'm trying. I bought some Federal Power-Shok .308 180gr soft points. They don't list the ballistic coefficient on their website. Where can I look to find this info?

[KRP]

JBM - Calculations

JBM has calculators to figure BC. Using Federals velocity numbers I get a BC of .389. This looks close compared to there wind drift figures also.

[Roktoys84]

Lots of good info there. Thanks.