I had some issues with them last year when I bought a new xbow that was shooting 370 fps. Needed to get bolts with brass inserts and a high FOC in order to get it to shoot accurately....and it did the trick. Black Eagle Executioners. They are fantastic.
I will say that I used the piledrivers on my older, slower bow with very little issue. My guess is if you are under 330 fps they will work fine, or try the slick trick Xbow broadheads....150 grains adds quite a bit to FOC.