Here's my dilemma: I'm shooting a Mathews Switchback XT (@ ~65 lbs.) with Easton Axis 400 arrows & 100 gr. Spitfire broadheads. I've never gotten a pass-thru with this setup, and am beginning to get worried about it...Last week (opening afternoon) I stuck a doe @ about 10 yards (perfectly broadside), and didn't get a pass-thru. The shot looked good, but maybe just a little bit high (4" or so below her spine and perfect forward/back). My Dad and I tracked this deer for 150 yds. or so before we lost the blood trail, in which we only found 3 softball-size spots of blood. This makes the 3rd deer I've stuck in the last 3 years (same exact shot) with the same result (no deer, no arrow)...I understand that a mechanical broadhead slows the arrow down alot, but @ 8-10 yds. I feel like I should be getting a pass-thru! I've been told that I may be shooting too light of an arrow...I have too much respect and appreciation for the critters and sport for this to continue! Would greatly appreciate sensible thoughts/opinions...thanks!