I agree with Roskoe 100 %. When the carbon arrow came out in the mid 80s to late 80's they where very small. They looked like pencil leads and the weight was more than most carbons arrows of to day. The penetration was unbelievable. When the Gold tip came out and the carbon arrow started becoming bigger around and lighter we lost a lot of the penetration. The arrow was still penetrating great, but not anything like the first ones. The axes arrow came out and now the carbon arrow are smaller diameter and some of the weight is back and guess what. I have always shot carbons not for the lighter weight, but for the way they penetrate. I have shot a lot of aluminum's and had lots of pass through s with them. It's the way that the lighter carbons pass through game with out braking are bending. Its almost like you missed and just shot the arrow in the ground. I have had them blow through the shoulder blades before. I do like the the speed of the newer bows, but not for the same reasons of most bowhunters and think if you have a bow shooting in the 260 to 280s you have a fast hard hitting bow and it's putting out lots of energy for bowhunting. The harder the bow is hitting the more likely your going to get a pass through and if you make a bad shot a bow hitting hard and has good penetration can some times turn it into a good shot.