Hey John. I use the Ace standards, 125 and 140, 160gr,me and a couple of pals have used them with great success last year. We are all adding 25 gr. inserts to screw in to carbons. We shot 5 deer with them last year, quick kills on all and serious holes!! They fly as good as my field tips or my Wensel woodsmans do, even with 3" shield cut feathers we made ourselves. I use a pull throught 2 blade carbide shapener, pull each side through about 6 times, ready to hunt!! This works as good as sharpening them on a stone, or the buffing wheels in my gun shop. I shot 3 doe with them, 30-35 yards, great double bloodtrails, farthest recovery was 120 yds. Holler back, Sam.