.300 Winchester Magnum: This is a wonderful cartridge with great versatility. America has always loved this cartridge for all of their big Game needs. We at Aria pair this cartridge with the best bullets available as well as heavy for caliber loads. This transforms your 300-win Mag into a real energy transferring tool. Bullets such as 250 Gr. hawk bullets are perfect for big Bears in Alaska or giant Black Bears in the west.