I have tried both side by side and in fact started using aluminum arrows before they even came out with carbon arrows. As to blood trail,exit hole is more important than arrow staying in game for broadhead doing more damage.
All of the game animals I've gotten in the last 15 years have dropped while still within sight-even elk and russian boar. The pure and simple facts are that carbon arrows are superior in almost every way for hunting as opposed to aluminum. On the argument that they ain't straight or spined properly all the way around,that issue is pretty well dead with today's modern improvments in design and manufacturing. I do buy top of the line carbon shafts-you get what you pay for. It DOES take a lot more for carbon arrows to break than aluminum wether hitting a hard surface or still in animal. We ain't gunna change each other's minds on this so let's give up and agree to disagree. I'm speaking from experience and ain't trying to promote outdated equipment from personal preference-just stating facts as my own experience has proven over the years. To each his own and whatever works for YOU-just please don't try to mislead new bowhunters into making mistakes so you may add a feather in your cap.