I would say unless you have a barrel set up specifically to shoot them, do not waste your time.
Even if you do have a barrel to shoot them, there are MUCH better bullets for terminal performance.
If the bullets are adiquately stabilized, I would say advertised BCs are close. If they are not fully stabilized, they can be MUCH lower.
Please realize that you can still have round bullet holes and decent groups with a marginally stabilized bullet but BC can be greatly effected.
For the money, I would not go with them for big game hunting, just to many better, more accurate options out there. Just my opinion though.
Kirby Allen(50)