Arrow Dynamics Arrows

I just demo'd some arrow dynamics arrows they sent me and was really surprised how well they shot. Just picked up my hog bow and paced of 30 yards and placed all 4 in a 2 1/2 inch bulls eye without making any adjustments. I shot both the big game and the nitro stinger gold with basically the same results. Has any one else shot these arrows. They say these shafts will fit from 45 to 90lbs. bows. I shoot 70lbs. and found them to preform real well