| I'm not able to measure arrow speed as I don't have the kit, but I have recently changed from 28.5 inch ACC's 500 spine with 100 grain points to 29 inch Navigators, 430 spine with 120 grain points - i.e. to a heavier but thinner arrow. My subjective impression is that the Nav's are an improvement, and significantly better in the wind. So that would tend to bear out what Marcus is saying. My sight marks are a little down on the ACC's but I think the arrows are indeed extracting more energy out of the bow, so have more momentum. The bow seems to shoot a little more sweetly too. |