Sorry it took me awhile Terry I fletch my own carbon shafts. I really like the "hammerhead" by "Arrow Dynamics". I repeated Dr Ashbey's penetration studies and found the hammer head out preformed not only strait carbons but tapered carbons like the grizzly sticks from Alaska bow hunters supply. Most of the game I hunt is either very big, Moose and bear or really difficult to get to, Dall sheep and mountain goat. Having a tougher than nails arrow is a major plus for me. The arrow dynamics taper also allows me to shoot the same shaft from all my bows! From the long bows to my Bears, they even fyl strait out of the wife's 1955 Kodiak special that only draws 30#, slow as hell but strait! I'm right at 650 for total weight which is perfect since the majority of my bows are at 65#. I shoot the single bevel "samurai" for anything over 1000 pounds, stamped steel is fine for caribou to ducks but griz and moose require a bit more.