Buffalo Bore Ammunition Premium Supercharged 35 Whelen 225 Gr Spitzer Bo. Buffalo Bore produces strictly big bore ammo with massive firepower and dramatic results. These Super Charged loads were designed to be premier loads providing devastating one shot terminal destruction of Big Game. When the Spitzer bullets are traveling these velocities the bullet will mushroom violently. It 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 42A/20 Premium Supercharged 35 Whelen 225 Gr Spitzer Bo: Manufacturer: Buffalo Bore Ammunition Caliber: .35 Whelen Number of Rounds: 20 Bullet Type: Spitzer Boat Tail (SBT) Bullet Weight: 225 grain Cartridge Case Material: Brass Muzzle Velocity: 2800 ft/s Application: Hunting Primer Style: Centerfire What is Buffalo Bore Ammunition 42A/20 Premium Supercharged 35 Whelen 225 Gr Spitzer Bo good for? The manufacturer says that it is good for hunting.