I shoot 500 spine carbon's cut down to 29 1/2 with 125 gr field points for my 52#@28, and my D/L is 29 1/2, so I am pulling just under 60#. In aluminum I shot 2016's set up the same as above. At 65# you are right on the edge of 500 or 400 spines, depending on tip weight. Try Stu's spine calculator it will put you in the ball park for your bow.