HSM Tipping Point .308 Winchester 165 Grain SST Centerfire Rifle Ammo features Hornady’s SST (Super Shock Tip) for enhanced shock on impact, while expanding rapidly and reliably at higher velocities. The SST bullet is ideal for North American game like white tail deer. A secant ogive, boat tail increases the bearing surface and creates a more aerodynamic profile. Get less drag with increased stability. Super Shock Tip Aerodynamic profile Secant ogive, tipped, boat tail hollow point