I used the Hammerheads for about 5 seasons. I loved them and killed a bunch of deer with them. Huge holes and massive bloodtrails. What I didn't like about them was they are pretty much a one shot and scrap em head. And like mobow said when I went to the FMJ arrows, as the opened up they cut thru the washer (that stops the bladesin the open position)and damaged my arrow. But they will definately open up a hole and do some damage.

I now use the R*** and love them.