Buy Hornady American Whitetail .300 Winchester Magnum InterLock BT 180-Grain Ammunition at Armory Shop 45. This .300 Winchester Magnum ammunition features the Hornady InterLock Soft Point Boat Tail projectile for improved wound ballistics and terminal performance. The cartridges utilize a 180-grain bullet capable of traveling at 2960 fps, giving them 3501 ft/lbs of energy at the muzzle. This ammunition is great for hunting medium-sized game like deer. When you need dependable ammunition that you can count on, you can trust in Hornady. Hornady’s American Whitetail Ammunition is crafted specifically to provide the very best possible performance for hunting whitetail deer. Available in all popular deer hunting calibers, this is the perfect ammunition for you!