Buffalo Bore Ammunition Premium 308 Win 180 Gr Spitzer Supercharged 20. This Super Charged load is designed to be a premier load providing devastating one shot terminal destruction of Big Game. When the Spitzer bullets are traveling the bullet will mushroom violently and may even fragment depending on bullet placement caliber and impact speed. For big game up to 350 lbs tremendous penetration is not needed so this bullet mushrooms radically and might even break up. When high speed bullets act this way terminally the effect is devastating and they absolutely dump deer sized game animals in their tracks. Specifications for Buffalo Bore Ammunition 39C/20 Premium 308 Win 180 Gr Spitzer Supercharged 20 B: Manufacturer: Buffalo Bore Ammunition Caliber: .308 Winchester Number of Rounds: 20 Bullet Type: Spitzer Bullet Weight: 180 grain Cartridge Case Material: Brass Muzzle Velocity: 2650 ft/s Application: Hunting Primer Style: Centerfire What is Buffalo Bore Ammunition 39C/20 Premium 308 Win 180 Gr Spitzer Supercharged 20 B good for? The manufacturer says that it is good for hunting.