Those phone books will never be the same again.[8D]
Couldn't resist.

Actually, it depends on the broadhead. Some are tough and can take that kind of punishment. Some will not survive it. The blades can break or bend. Even the ferrules can get bent. Might even snap off the threads inside your inserts. It's a good test to do on a broadhead if you question whether it'll hold together on game.
Even if the blades don't break or bend, they will not be useable until they are resharpened or replaced.