The sharp point of the SST (Super Shock Tip) increases its ballistic coefficient making it faster and flatter shooting. On impact the tip also initiates controlled expansion at all velocities. Secant Ogive Boat-tail Spire Point Profile bullets that travel faster hit harder. The Hornady secant ogive boat-tail spire point profile gives hunters the incredible speed and downrange energy they're looking for. The interlock ring ensures the core and jacket remain locked solid during expansion so the SST retains the mass and energy needed for dramatic wound channels. Perfected in the famous Hornady Interlock hunting bullet. 20 rounds per box.