Norma Ecostrike .308 Winchester 165grThis is the sporting version of 7,62x51mm NATO. It was introduced by Winchester in 1952 only a year after the new NATO cartridge. As most other military cartridges it was expected to become popular for hunting quickly and Winchester wisely decided to make a civilian version with their name. The purpose of the new military design was to make a more compact cartridge with a quicker cycle rate than the . 30 06, and enabling a soldier to carry more