i went down tonight and shot my goldtips 3555xt at 271/2 in with a 100 grain pt set at 57 pds--was shooting fairly well and found an old aluminum xx75 i use to shoot with a overdraw 251/2 long and wated to see how it would fly.hit dead center on the bull--arrow flew great and man was my bow a lot quiter--so i went and got 2 more of the same shafts and grouped real well.everyone is hooked a more speed these days including me.but i have finally come to the pt were consistency is better and next year im back to aluminum---tuning seems so much easier also