I always thought pass through, but after talking to a elk guide this past weekend he almost has me convinced that a fixed blade broadhead is better to stay in because it does so much damage when they run. I have never had an arrow stay in an elk, but he has seen a lot more than I have and he swears it is better to jam it up against the far shoulder and have it stay in.

The buck I shot this year was a pass thru double lung. He didn't run (thank god), but walked off and lived for about a full minute before giving up the ghost. Each hit is something new.