.30 CALIBER/7.62MM (.308) 180 GR. SPT The 180 grain #2150 bullets has Sierra's unique double-tapered hunting jacket that has been field proven under all conceivable conditions. The 180 grain #2150 bullet should be used for medium and large game. This bullet is extremely accurate, providing an undeniable edge in the game fields. Reliable expansion and deep penetration blended with Sierra's classic Spitzer flatbase profile makes these the bullets of choice with many 30 caliber riflemen. For handguns, Sierra's Pro-Hunter design is generally considered too "hard" for all but the most powerful of the 30 caliber handgun cartridges. Handguns chambered for the 308 Winchester cartridge or cartridges of similar size can use these bullets over maximum hunting loads at short range, providing bullet weight is matched to the size of the game. Due to their flat base design, Pro-Hunter bullets are an excellent choice for a cartridge with limited powder capacity and a short neck, because these bullets intrude into the powder space less than a boat tail.