7mm-08 Ammo For SaleThe 7mm-08 Remington can be a rifle cartridge that is almost a direct copy of the wildcat cartridge developed all-around 1958 generally known as the 7mm/308. As these names would counsel, it's the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length. Of cartridges based upon the .30