I've tried the 2 bladeand had a bad experience with them this year! My shot was good, the entrance hole was just like everyone's pics, but the blades broke off, and the exit hole was the diameter of the arrow shaft. It was a lethat shot, but left no blood to trail. The deer ran approximately 80 yards and expired, but unable to track by blood.

The broadhead did its job, but i was disapointed with the blades breaking and the small exit hole. I switched to fixed blades later that day.

I do believe the blades opening prematurely on flight is caused by not having them secured in place prior to shooting or hitting a branch/twig while shooting. They can come open pretty easily while in quiver or if you get them caught on brush.