I have a bunch of Rogue river heavy for their spines tapered cedars, Alaskan tapered carbons, and dozens of 1918s and 1818s. The cedars will shoot out of a wider poundage range from bow to bow, the aluminum arrows will manage about a 7 pound bow to bow variance.The carbons shoot good out of just one stored energy level, which happens to be two different bows, with everything else they shoot about 8 inches to the right with my right hand bows. With the Alaskans, I would recommend using a broadhead that does not penetrate well for whitetail deer, like a large Deadhead. They are impossible to find back when I shoot them through a deer with my single bevel Hills.