yes you can,but depending if you are going heavier or lighter. you might over/ under spine you arrows and change your impact. i would only reccomend changing only i size on the chart. i am supposed to be shooting 2315 shafts but am shooting 2219 shafts. i am shooting a heavy arrow for the simple fact for harder hitting and kinetic energy for wild pigs. i would reccomend only buying a half a dozen arrows to see how they shoot out of your bow. some bows will only shoot best with the reccomended arrows with in the chart range.