I thinks Ron's testing shows what needs to be done to get reliable expansion and energy.

http://www.huntingnet.com/forum/blac...ml#post4206008

I would think I would seriously weigh his suggestion if you want to use the Federal.

The OP says he was using 100 grains (by volume) I assume and shot the elk at 60 yards +/-. At that range the bullet worked pretty much as designed, even though I would expect it to exit at 60 yards. I think I can safely say that either a Barnes or a Nosler Partition would have. I would even lay the bet that a comparable Speer Deep Curl would.

Actually it is kinda like verification of Ron's testing.

It is my belief as Ron has suggested - if you want to shoot this bullet at extended ranges you will need to increase the powder charge to get the necessary velocity.

Once you have done that the next question would be what would the bullet do at the closer ranges, especially shooting thin skinned whitetail. Might it be driven hard enough that it would not reliably expand at short range?

There have been comments on other forums of this very problem.

Does anyone know or has Federal posted the operating velocity of the bullet?

And once again I have no first hand experience with the bullet, just a lot of questions after viewing and reading.