The idea of aiming for a vein is rediculous, weren't we all taught better than this? I helped a member of our club trail a buck that he took a running shot at. The ground was covered in snow making the trailing pretty easy. After more than half a mile we saw so much blood that he should have bled out but he hadn't. We finaly jumped him and my buddy drilled him in the "poop chute". Turned out that the first hit was in the rear leg, the .35 remington not only hit a vein but blew his testicles off. This is not a good place to shoot any animal.